{"id":6636,"date":"2025-09-01T15:16:13","date_gmt":"2025-09-01T09:46:13","guid":{"rendered":"https:\/\/www.testleaf.com\/blog\/?p=6636"},"modified":"2025-09-01T15:22:11","modified_gmt":"2025-09-01T09:52:11","slug":"debugging-selenium-scripts","status":"publish","type":"post","link":"https:\/\/www.testleaf.com\/blog\/debugging-selenium-scripts\/","title":{"rendered":"Debugging Selenium Scripts: 10 Proven Ways to Fix Test Failures Fast"},"content":{"rendered":"<div style=\"margin-top: 0px; margin-bottom: 0px;\" class=\"sharethis-inline-share-buttons\" ><\/div><!--[if lt IE 9]><script>document.createElement('audio');<\/script><![endif]-->\n<audio class=\"wp-audio-shortcode\" id=\"audio-6636-1\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Debugging-Selenium-Scripts.mp3?_=1\" \/><a href=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Debugging-Selenium-Scripts.mp3\">https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Debugging-Selenium-Scripts.mp3<\/a><\/audio>\n<h3><\/h3>\n<h3><strong>Introduction<\/strong><\/h3>\n<p><span class=\"TextRun SCXW135815160 BCX8\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW135815160 BCX8\">Top ways to Troubleshoot Selenium Script Failures robotization with Selenium is a lifesaver for testers, but <\/span><span class=\"NormalTextRun SCXW135815160 BCX8\">there\u2019s<\/span><span class=\"NormalTextRun SCXW135815160 BCX8\"> catch test scripts <\/span><span class=\"NormalTextRun SCXW135815160 BCX8\">don\u2019t<\/span><span class=\"NormalTextRun SCXW135815160 BCX8\"> always bear as <\/span><span class=\"NormalTextRun SCXW135815160 BCX8\">anticipated<\/span><span class=\"NormalTextRun SCXW135815160 BCX8\">. One failed run and <\/span><span class=\"NormalTextRun SCXW135815160 BCX8\">you\u2019re<\/span><span class=\"NormalTextRun SCXW135815160 BCX8\"> left gaping at endless error logs. The real difference between a frustrated tester and a confident QA professional is the capability to remedy failures snappily and effectively. This companion will walk you through the most common reasons Selenium scripts fail and the top ways to troubleshoot them like a pro.<\/span><\/span><span class=\"EOP SCXW135815160 BCX8\" data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<h2 aria-level=\"2\"><span class=\"ez-toc-section\" id=\"Why_Selenium_Tests_Fail_Common_Causes\"><\/span><b><span data-contrast=\"none\">Why Selenium Tests Fail <\/span><\/b><strong>(Common Causes)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.testleaf.com\/blog\/debugging-selenium-scripts\/#Why_Selenium_Tests_Fail_Common_Causes\" >Why Selenium Tests Fail (Common Causes)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.testleaf.com\/blog\/debugging-selenium-scripts\/#How_to_Debug_Selenium_Scripts_10_Techniques\" >How to Debug Selenium Scripts: 10 Techniques<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.testleaf.com\/blog\/debugging-selenium-scripts\/#Bonus_Shadow_DOM_and_iFrame_Debugging\" >Bonus: Shadow DOM and iFrame Debugging\u00a0\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.testleaf.com\/blog\/debugging-selenium-scripts\/#Best_Practices_for_Debugging_Selenium_Scripts\" >Best Practices for Debugging Selenium Scripts\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.testleaf.com\/blog\/debugging-selenium-scripts\/#Frequently_Asked_Questions_FAQs\" >Frequently Asked Questions (FAQs)<\/a><\/li><\/ul><\/nav><\/div>\n\n<p><span data-contrast=\"auto\">Selenium scripts often fail for reasons beyond simple coding errors. Some <a href=\"https:\/\/www.testleaf.com\/blog\/common-mistakes-to-avoid-in-automation-testing\/\">common causes<\/a> are:<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Fragile or incorrect locators (XPaths, CSS selectors).<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"auto\">Pages not fully loaded before the script interacts with elements.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-contrast=\"auto\">Synchronization issues between the browser and the script.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"4\" data-aria-level=\"1\"><span data-contrast=\"auto\">Version mismatches in browsers, drivers, or environments.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"5\" data-aria-level=\"1\"><span data-contrast=\"auto\">Dynamic UI or DOM changes after application updates.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"6\" data-aria-level=\"1\"><span data-contrast=\"auto\">Problems with iFrames, Shadow DOMs, or nested structures.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"10\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"7\" data-aria-level=\"1\"><span data-contrast=\"auto\">Exceptions not being handled properly.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-6640\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Why-Selenium-Tests-Fail.jpg\" alt=\"Why Selenium Tests Fail\" width=\"1024\" height=\"1024\" srcset=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Why-Selenium-Tests-Fail.jpg 1024w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Why-Selenium-Tests-Fail-300x300.jpg 300w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Why-Selenium-Tests-Fail-150x150.jpg 150w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Why-Selenium-Tests-Fail-768x768.jpg 768w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Why-Selenium-Tests-Fail-96x96.jpg 96w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p><strong>Other Useful Guides:<\/strong> <a href=\"https:\/\/www.testleaf.com\/blog\/top-25-api-automation-engineer-interview-questionsin-2025-with-answers\/\">api testing interview questions<\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_to_Debug_Selenium_Scripts_10_Techniques\"><\/span><strong>How to Debug <a href=\"https:\/\/www.testleaf.com\/blog\/tracking-selenium-script-execution-count-using-java\/\">Selenium Scripts<\/a>: 10 Techniques<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 aria-level=\"2\"><b><span data-contrast=\"none\">1. Read the Stack Trace<\/span><\/b><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">The mound trace is your stylish indication when effects go wrong. It tells you<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">The type of exception (e.g., NoSuchElementException, TimeoutException).<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"auto\">The line number where the error passed.\u00a0<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"11\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-contrast=\"auto\">The sequence of method calls leading up to the failure.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">Exception in thread &#8220;main&#8221; org.openqa.selenium.NoSuchElementException: no such element<\/span><br \/>\n<span data-contrast=\"auto\">(Session info: chrome=114.0)<\/span><\/p>\n<blockquote><p><span data-contrast=\"auto\">Element info: {Using=xpath, value=\/\/button[@id=&#8217;login&#8217;]}<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:337)<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 at com.test.LoginPage.clickLogin(LoginPage.java:25)<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 at com.test.LoginTest.testLogin(LoginTest.java:15)<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p><\/blockquote>\n<p><strong>Crucial points to check in a mound trace:\u00a0<\/strong><\/p>\n<ul>\n<li><span data-contrast=\"auto\">The exception type (NoSuchElementException, TimeoutException, etc.).<\/span><\/li>\n<li><span data-contrast=\"auto\">The line number in your test where the error occurred.<\/span><\/li>\n<li><span data-contrast=\"auto\">he call hierarchy, which tells you what sequence of <a href=\"https:\/\/www.testleaf.com\/blog\/different-software-testing-methods-every-qa-should-know\/\">methods<\/a> executed before failure.<\/span><span data-contrast=\"auto\"><strong>Pro Tip:<\/strong> In Java, use Throwable.printStackTrace() to print detailed traces in a readable format.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<h3 aria-level=\"2\"><b><span data-contrast=\"none\">2. Use Proper Logging Instead of Print Statements<\/span><\/b><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">System.out.println() works for small experiments, but in real test frameworks, it creates clutter. Instead, use <\/span><b><span data-contrast=\"auto\">logging frameworks<\/span><\/b><span data-contrast=\"auto\"> like Log4j or SLF4J, which let you categorize messages as <\/span><b><span data-contrast=\"auto\">INFO, DEBUG, WARN, ERROR<\/span><\/b><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><strong>This makes it easier to:\u00a0<\/strong><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"12\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Track each step in execution.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"12\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"auto\">See what data was passed to the application.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"12\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-contrast=\"auto\">Understand whether the failure was expected or sudden.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">private static final Logger logger = LogManager.getLogger(LoginTest.class);<\/span><\/p>\n<blockquote><p><span data-contrast=\"auto\">@Test<\/span><br \/>\n<span data-contrast=\"auto\">public void testLogin() {<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 logger.info(&#8220;Launching cybersurfer&#8221;);<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 driver.get(&#8220;https:\/\/example.com&#8221;);<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 logger.debug(&#8220;Entering username and password&#8221;);<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 driver.findElement(By.id(&#8220;username&#8221;)).sendKeys(&#8220;testuser&#8221;);<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 driver.findElement(By.id(&#8220;password&#8221;)).sendKeys(&#8220;pass123&#8221;);<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 logger.info(&#8220;Clicking login button&#8221;);<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 driver.findElement(By.id(&#8220;login&#8221;)).click();<\/span><br \/>\n<span data-contrast=\"auto\">}<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p><\/blockquote>\n<p><strong>With logging, you can:\u00a0<\/strong><br \/>\n<span data-contrast=\"auto\">\u2022 Monitor test flow <a href=\"https:\/\/www.testleaf.com\/blog\/step-by-step-approach-to-solve-any-programming-questions-in-your-qa-interview\/\">step by step<\/a>.<\/span><br \/>\n<span data-contrast=\"auto\">\u2022 Capture test data passed between methods.<\/span><br \/>\n<span data-contrast=\"auto\">\u2022 Classify logs with INFO, DEBUG, WARN, and ERROR levels.<\/span><br \/>\n<span data-contrast=\"auto\">\u2022 Integrate logs with reporting tools for better insights.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><strong>Recommended for You:<\/strong> <a href=\"https:\/\/www.testleaf.com\/blog\/2025-top-automation-testing-infosys-interview-questions-with-expert-answers-from-testleaf-for-2-to-5-years-experience\/\">automation testing interview questions<\/a><\/p>\n<h3 aria-level=\"2\"><a href=\"https:\/\/www.testleaf.com\/course\/selenium-automation-certification-training-course.html?utm_source=blog-post&amp;utm_medium=Organic&amp;utm_campaign=Blog_Post\"><img decoding=\"async\" class=\"aligncenter wp-image-5159 size-full\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium.jpg\" alt=\"Selenium training in chennai\" width=\"2048\" height=\"512\" srcset=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium.jpg 2048w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium-300x75.jpg 300w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium-1024x256.jpg 1024w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium-768x192.jpg 768w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium-1536x384.jpg 1536w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/06\/Selenium-150x38.jpg 150w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/><\/a><\/h3>\n<h3 aria-level=\"2\"><b><span data-contrast=\"none\">3. Take Screenshots on Failures<\/span><\/b><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">A screenshot at the exact moment of failure is often worth more than a hundred logs. It shows what the application looked like when things broke \u2014 missing elements, overlays, or alert pop-ups become immediately visible.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<blockquote><p><span data-contrast=\"auto\">public void takeScreenshot(String testName) {<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 File srcFile = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 File destFile = new File(&#8220;screenshots\/&#8221; + testName + &#8220;.png&#8221;);<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 FileUtils.copyFile(srcFile, destFile);<\/span><br \/>\n<span data-contrast=\"auto\">}<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p><\/blockquote>\n<p><span data-contrast=\"auto\">Integrate screenshot capture in your framework so that whenever a failure occurs, the screenshot is automatically attached to your test reports (e.g., ExtentReports, Allure).<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<h3 aria-level=\"2\"><b><span data-contrast=\"none\">4. Fix Synchronization Issues with Smart Waits<\/span><\/b><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">One of the biggest reasons Selenium tests fail is timing. The script is faster than the page. Many beginners rely on Thread.sleep(), but this leads to slow and short scripts.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The result?\u00a0 Use <\/span><b><span data-contrast=\"auto\"><a href=\"https:\/\/www.testleaf.com\/blog\/how-to-use-auto-wait-and-explicit-wait-in-playwright-beginners-guide\/\">Explicit Waits<\/a> (WebDriverWait)<\/span><\/b><span data-contrast=\"auto\">. They only break until a specific condition is met (like visibility of an element), making scripts briskly and more dependable.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<blockquote><p><span data-contrast=\"auto\">WebDriverWait wait = new WebDriverWait(driver, Duration.ofSeconds(10));<\/span><br \/>\n<span data-contrast=\"auto\">WebElement element = wait.until(ExpectedConditions.visibilityOfElementLocated(By.id(&#8220;login&#8221;)));<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p><\/blockquote>\n<p><span data-contrast=\"auto\">Smart delays insure that your script waits only as long as necessary. synopsize them in mileage classes with logs for reusability.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<h3 aria-level=\"2\"><b><span data-contrast=\"none\">5. Debug with Browser Developer Tools<\/span><\/b><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">Your browser\u2019s <\/span><b><span data-contrast=\"auto\"><a href=\"https:\/\/www.testleaf.com\/blog\/selenium-4-capture-analyze-network-logs-with-chrome-devtools-protocol\/\">DevTools<\/a> (F12)<\/span><\/b><span data-contrast=\"auto\"> is one of the most powerful allies for debugging. You can:<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"13\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Inspect and test locators directly (XPaths, CSS).<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"13\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"auto\">Spot JavaScript errors in the console.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"13\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-contrast=\"auto\">Use the Network tab to verify if APIs are delayed or failing.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"13\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" data-aria-posinset=\"4\" data-aria-level=\"1\"><span data-contrast=\"auto\">Investigate if elements are inside iFrames or Shadow DOMs.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">Many failures come from small UI quirks that DevTools reveals instantly.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<h3 aria-level=\"2\"><b><span data-contrast=\"none\">6. Add a Retry <a href=\"https:\/\/medium.com\/@testleaf\">Medium<\/a> for short Tests<\/span><\/b><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">Occasionally, tests fail due to temporary network glitches or gar\u00e7on detainments. Rather of marking them as failed immediately, configure your framework to <\/span><b><span data-contrast=\"auto\">retry failed tests automatically<\/span><\/b><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">For illustration, in <a href=\"https:\/\/en.wikipedia.org\/wiki\/TestNG\">TestNG<\/a> you can use a RetryAnalyzer that re-runs failed tests a limited number of times before marking them as failed.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<blockquote><p><span data-contrast=\"auto\">public class RetryAnalyzer implements IRetryAnalyzer {<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 private int retryCount = 0;<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 private static final int maxRetryCount = 2;<\/span><\/p>\n<p><span data-contrast=\"auto\">\u00a0\u00a0\u00a0 public boolean retry(ITestResult result) {<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if (retryCount &lt; maxRetryCount) {<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 retryCount++;<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 return true;<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 }<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 return false;<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 }<\/span><br \/>\n<span data-contrast=\"auto\">}<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p><\/blockquote>\n<p><span data-contrast=\"auto\">This helps differentiate <\/span><b><span data-contrast=\"auto\">flaky failures<\/span><\/b><span data-contrast=\"auto\"> from <\/span><b><span data-contrast=\"auto\">real bugs.<\/span><\/b><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-6638\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/How-to-Debug-Selenium-Scripts.jpg\" alt=\"How to Debug Selenium Scripts\" width=\"1312\" height=\"736\" srcset=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/How-to-Debug-Selenium-Scripts.jpg 1312w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/How-to-Debug-Selenium-Scripts-300x168.jpg 300w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/How-to-Debug-Selenium-Scripts-1024x574.jpg 1024w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/How-to-Debug-Selenium-Scripts-768x431.jpg 768w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/How-to-Debug-Selenium-Scripts-150x84.jpg 150w\" sizes=\"(max-width: 1312px) 100vw, 1312px\" \/><\/p>\n<h3 aria-level=\"2\"><b><span data-contrast=\"none\">7. Debugging in <a href=\"https:\/\/www.testleaf.com\/blog\/top-10-best-ides-for-web-development-in-2025\/\">IDE<\/a> (Eclipse\/IntelliJ)<\/span><\/b><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">If logs and screenshots don\u2019t break the mystification. Run your test in <\/span><b><span data-contrast=\"auto\">Debug Mode<\/span><\/b><span data-contrast=\"auto\"> in Eclipse or IntelliJ<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><strong>With breakpoints, you can:\u00a0<\/strong><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"14\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Check <\/span><span data-contrast=\"auto\">variable values in real-time.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"14\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"auto\">Check if locators are being passed correctly.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"14\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-contrast=\"auto\">See how WebDriver behaves step-by-step.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">It\u2019s slower than normal execution but invaluable for finding hidden logic <a href=\"https:\/\/www.testleaf.com\/blog\/selenium-exception-handling-guide-fix-the-5-most-common-errors\/\">errors<\/a>.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<h3 aria-level=\"2\"><b><span data-contrast=\"none\">8. Write Smart Assertions<\/span><\/b><br \/>\n<b><\/b><\/h3>\n<p aria-level=\"2\"><b><span data-contrast=\"none\">Assertions should not just check conditions; they should explain failures<\/span><\/b><b><span data-contrast=\"none\">.<\/span><\/b><\/p>\n<blockquote><p><span data-contrast=\"auto\">Assert.assertEquals(driver.getTitle(), &#8220;Dashboard&#8221;, &#8220;Page title did not match!&#8221;);<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p aria-level=\"2\"><span data-contrast=\"auto\">With dispatches, you\u2019ll incontinently know what failed instead of guessing.<\/span><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/p>\n<\/blockquote>\n<h3 aria-level=\"2\"><b><span data-contrast=\"none\">9. Use Enhanced Reporting Tools<\/span><\/b><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">Debugging becomes much easier with rich test reports. Tools like <\/span><b><span data-contrast=\"auto\">ExtentReports<\/span><\/b><span data-contrast=\"auto\"> or <\/span><b><span data-contrast=\"auto\">Allure<\/span><\/b><span data-contrast=\"auto\"> not only show which test failed but also:<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"15\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Step-by-step execution logs.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"15\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"auto\">Embedded screenshots.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"15\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-contrast=\"auto\">Failure details with exception traces.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">Think of them as a \u201cvisual debugger\u201d for your test suite.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><a href=\"https:\/\/www.testleaf.com\/course\/playwright.html?utm_source=blog-post&amp;utm_medium=Organic&amp;utm_campaign=Blog_Post\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5709 size-full\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class.png\" alt=\"Playwright automation testing\" width=\"2048\" height=\"512\" srcset=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class.png 2048w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class-300x75.png 300w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class-1024x256.png 1024w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class-768x192.png 768w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class-1536x384.png 1536w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/Playwright-online-class-150x38.png 150w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/><\/a><\/p>\n<h3 aria-level=\"2\"><b><span data-contrast=\"none\">10. <a href=\"https:\/\/www.testleaf.com\/blog\/selenium-exception-handling-guide-fix-the-5-most-common-errors\/\">Handle Exceptions<\/a> Gracefully<\/span><\/b><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/h3>\n<p><span data-contrast=\"auto\">Crashing the whole suite because of one unhandled exception is extravagant. rather, wrap actions in custom methods that log failures, take screenshots, and fail gracefully.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<blockquote><p><span data-contrast=\"auto\">public void clickElement(By locator) {<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 try {<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 driver.findElement(locator).click();<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 reportStep(&#8220;Clicked element successfully&#8221;, &#8220;pass&#8221;);<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 } catch (Exception e) {<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 reportStep(&#8220;Failed to click element: &#8221; + locator, &#8220;fail&#8221;);<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 throw e;<\/span><br \/>\n<span data-contrast=\"auto\">\u00a0\u00a0\u00a0 }<\/span><br \/>\n<span data-contrast=\"auto\">}<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p><\/blockquote>\n<p><span data-contrast=\"auto\">This way, you know exactly <\/span><b><span data-contrast=\"auto\">which step failed<\/span><\/b><span data-contrast=\"auto\"> without halting the rest of the execution.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<h2 aria-level=\"2\"><span class=\"ez-toc-section\" id=\"Bonus_Shadow_DOM_and_iFrame_Debugging\"><\/span><b><span data-contrast=\"none\">Bonus: Shadow DOM and iFrame Debugging<\/span><\/b><b><span data-contrast=\"none\">\u00a0<\/span><\/b><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span data-contrast=\"auto\">These are common troublemakers.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"16\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">For <\/span><a href=\"https:\/\/en.wikipedia.org\/?title=Iframes&amp;redirect=no\"><b><span data-contrast=\"auto\">iFrames<\/span><\/b><\/a><span data-contrast=\"auto\">, always switch to the correct frame before interacting, then switch back to the default content.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n<li aria-setsize=\"-1\" data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"16\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"auto\">For <\/span><b><span data-contrast=\"auto\">Shadow DOM<\/span><\/b><span data-contrast=\"auto\">, use JavascriptExecutor to pierce the shadow boundary and access elements.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<blockquote><p><span data-contrast=\"auto\">\/\/ Access Shadow DOM element<\/span><br \/>\n<span data-contrast=\"auto\">JavascriptExecutor js = (JavascriptExecutor) driver;<\/span><br \/>\n<span data-contrast=\"auto\">WebElement shadowHost = driver.findElement(By.cssSelector(&#8220;#shadow-host&#8221;));<\/span><br \/>\n<span data-contrast=\"auto\">WebElement shadowRoot = (WebElement) js.executeScript(&#8220;return arguments[0].shadowRoot&#8221;, shadowHost);<\/span><br \/>\n<span data-contrast=\"auto\">WebElement innerElement = shadowRoot.findElement(By.cssSelector(&#8220;.shadow-btn&#8221;));<\/span><\/p>\n<p><span data-contrast=\"auto\">\/\/ Switch to iFrame<\/span><br \/>\n<span data-contrast=\"auto\">driver.switchTo().frame(&#8220;iframeId&#8221;);<\/span><br \/>\n<span data-contrast=\"auto\">driver.findElement(By.id(&#8220;insideFrame&#8221;)).click();<\/span><br \/>\n<span data-contrast=\"auto\">driver.switchTo().defaultContent();<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p><\/blockquote>\n<p aria-level=\"2\"><span data-contrast=\"auto\">These techniques eliminate one of the most frustrating classes of failures in Selenium.<\/span><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/p>\n<h2 aria-level=\"2\"><span class=\"ez-toc-section\" id=\"Best_Practices_for_Debugging_Selenium_Scripts\"><\/span><b><span data-contrast=\"none\">Best Practices for Debugging Selenium Scripts<\/span><\/b><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><span data-contrast=\"auto\"> Always keep browser drivers in sync with browsers.<\/span><\/li>\n<li><span data-contrast=\"auto\">Log every critical action for traceability.<\/span><\/li>\n<li><span data-contrast=\"auto\">Capture screenshots for all failures.<\/span><\/li>\n<li><span data-contrast=\"auto\">Use reusable utility methods for waits and interactions.<\/span><\/li>\n<li><span data-contrast=\"auto\">Run <a href=\"https:\/\/www.testleaf.com\/blog\/is-playwright-automation-the-end-of-flaky-tests-heres-the-truth\/\">flaky tests<\/a> with retries to confirm real issues.<\/span><\/li>\n<li><span data-contrast=\"auto\">Integrate tests with reporting tools for better observability.<\/span><\/li>\n<li><span data-contrast=\"auto\">Debug step-by-step in IDE for logic-related errors.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-6639\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Best-Practices-for-Debugging-Selenium-Scripts.jpg\" alt=\"Best Practices for Debugging Selenium Scripts\" width=\"1312\" height=\"736\" srcset=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Best-Practices-for-Debugging-Selenium-Scripts.jpg 1312w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Best-Practices-for-Debugging-Selenium-Scripts-300x168.jpg 300w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Best-Practices-for-Debugging-Selenium-Scripts-1024x574.jpg 1024w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Best-Practices-for-Debugging-Selenium-Scripts-768x431.jpg 768w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/09\/Best-Practices-for-Debugging-Selenium-Scripts-150x84.jpg 150w\" sizes=\"(max-width: 1312px) 100vw, 1312px\" \/><\/p>\n<h3 aria-level=\"2\"><b><span data-contrast=\"none\">Final Thoughts<\/span><\/b><span data-ccp-props=\"{&quot;134245418&quot;:true,&quot;134245529&quot;:true,&quot;335559738&quot;:200,&quot;335559739&quot;:0}\">\u00a0<\/span><\/h3>\n<p data-start=\"140\" data-end=\"473\">Debugging is not just about fixing errors \u2014 it\u2019s about understanding why they happen so you can prevent them in the future. With techniques like stack trace analysis, smart logging, screenshots, retries, enhanced reports, and IDE debugging, you\u2019ll be well-equipped to troubleshoot Selenium failures like a pro.<\/p>\n<p data-start=\"475\" data-end=\"603\">\ud83d\udc49 If you\u2019re looking to upskill, explore our <a href=\"https:\/\/www.testleaf.com\/course\/selenium-automation-certification-training-course.html?utm_source=blog-post&amp;utm_medium=Organic&amp;utm_campaign=Blog_Post\"><strong data-start=\"520\" data-end=\"552\">Selenium Training in Chennai<\/strong><\/a> to gain hands-on expertise and become job-ready.<\/p>\n<p data-start=\"605\" data-end=\"725\"><strong>Remember:<\/strong> consistent debugging practices lead to more reliable, maintainable, and professional test automation suites.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_FAQs\"><\/span><strong>Frequently Asked Questions (FAQs)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h4><strong>What are the most common reasons Selenium tests fail?<\/strong><\/h4>\n<p>Common reasons include fragile locators, sync issues, browser\/driver mismatches, and DOM changes.<\/p>\n<h4><strong>How do I debug Selenium scripts in Eclipse or IntelliJ?<\/strong><\/h4>\n<p>Run your test in Debug Mode with breakpoints to inspect variables and step through execution.<\/p>\n<h4><strong>How can I fix flaky Selenium tests?<\/strong><\/h4>\n<p>Use smart waits, retries, and ensure environment stability to minimize flakiness.<\/p>\n<h4><strong>What is the best way to handle iFrames and Shadow <a href=\"https:\/\/www.testleaf.com\/blog\/selenium-dom-properties-explained-fix-hidden-error-messages\/\">DOM in Selenium<\/a>?<\/strong><\/h4>\n<p>Switch frames properly and use JavascriptExecutor for Shadow DOM elements.<\/p>\n<h4><strong>How do I capture screenshots on Selenium test failures?<\/strong><\/h4>\n<p>Use TakesScreenshot interface in Selenium and attach images to reports for better debugging.<\/p>\n<h5><\/h5>\n<h5><strong>We Also Provide Training In:<\/strong><\/h5>\n<ul>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/selenium-automation-certification-training-course.html\"><strong>Advanced Selenium Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/playwright.html\"><strong>Playwright Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/genai-qa-engineers-training-course.html\"><strong>Gen AI Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/aws-cloud-architect-certification-training-course.html\"><strong>AWS Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/rest-api-testing-certification-training-course.html\"><strong>REST API Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/full-stack-developer-certification-training-course.html\"><strong>Full Stack Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/appium-mobile-automation-certification-training-course.html\"><strong>Appium Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/dev-ops-master-certification-training-course.html\"><strong>DevOps Training<\/strong><\/a><\/li>\n<li><a href=\"https:\/\/www.testleaf.com\/course\/apache-jmeter-testing-training-course.html\"><strong>JMeter Performance Training<\/strong><\/a><\/li>\n<\/ul>\n<h6><strong>Author\u2019s Bio<\/strong>:<\/h6>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2404 alignleft\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2023\/04\/Untitled-design.png\" sizes=\"(max-width: 250px) 100vw, 250px\" srcset=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2023\/04\/Untitled-design.png 250w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2023\/04\/Untitled-design-150x150.png 150w, https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2023\/04\/Untitled-design-96x96.png 96w\" alt=\"\" width=\"250\" height=\"250\" \/><\/p>\n<p>As CEO of TestLeaf, I\u2019m dedicated to transforming software testing by empowering individuals with real-world skills and advanced technology. With 24+ years in software engineering, I lead our mission to shape local talent into global software professionals. Join us in redefining the future of test engineering and making a lasting impact in the tech world.<\/p>\n<p><strong>Babu Manickam<\/strong><\/p>\n<p>CEO \u2013 Testleaf<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href=\"https:\/\/in.linkedin.com\/in\/babu-manickam\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.testleaf.com\/blog\/wp-content\/uploads\/2025\/07\/linkedin.png\" alt=\"LinkedIn Logo\" width=\"28\" height=\"28\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction Top ways to Troubleshoot Selenium Script Failures robotization with Selenium is a lifesaver for testers, but there\u2019s catch test scripts don\u2019t always bear as anticipated. One failed run and you\u2019re left gaping at endless error logs. The real difference between a frustrated tester and a confident QA professional is the capability to remedy failures &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.testleaf.com\/blog\/debugging-selenium-scripts\/\"> <span class=\"screen-reader-text\">Debugging Selenium Scripts: 10 Proven Ways to Fix Test Failures Fast<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":6637,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[16],"tags":[851,786,70,29,805,852,91],"class_list":["post-6636","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-selenium","tag-debugging","tag-java-selenium","tag-learn-selenium","tag-selenium","tag-selenium-automation-testing","tag-selenium-scripts","tag-selenium-testing"],"acf":[],"aioseo_notices":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/posts\/6636","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/comments?post=6636"}],"version-history":[{"count":3,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/posts\/6636\/revisions"}],"predecessor-version":[{"id":6644,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/posts\/6636\/revisions\/6644"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/media\/6637"}],"wp:attachment":[{"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/media?parent=6636"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/categories?post=6636"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.testleaf.com\/blog\/wp-json\/wp\/v2\/tags?post=6636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}