{"id":16234,"date":"2026-06-03T14:16:09","date_gmt":"2026-06-03T14:16:09","guid":{"rendered":"https:\/\/hostonce.com\/blog\/?p=16234"},"modified":"2026-06-05T14:22:00","modified_gmt":"2026-06-05T14:22:00","slug":"complete-guide-to-wordpress-debugging","status":"publish","type":"post","link":"https:\/\/hostonce.com\/blog\/complete-guide-to-wordpress-debugging\/","title":{"rendered":"A Complete Guide to WordPress Debugging (Enable WP_DEBUG)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Just like every software, the WordPress website also has its fair share of glitches and errors. For example, 60% of WordPress sites encounter WP debug issues that can lead to a plugin conflict or the dreaded white screen of death. With WordPress controlling more than 500 million websites today, these problems have led to over 200,000 installations of a WordPress plugin like Query Monitor for debugging and troubleshooting. <\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Whether you&#8217;re a developer or a website owner, understanding the WP Debug Guide process is a must. This article will show you how to debug your WordPress, the importance of using debugging plugins for WordPress, and common errors when enabling WordPress debugging. We will also look at terms like WordPress debug log, WordPress configuration file, WordPress admin bar, and many debugging plugins. When it comes to WordPress development, understanding specific debugging areas can save you time, money, and effort. <\/p>\n\n\n\n<h5 id=\"h-key-takeaways\" class=\"wp-block-heading\"><span id=\"key-takeaways\"><strong>Key Takeaways<\/strong><\/span><\/h5>\n\n\n\n<ul class=\"wp-block-list is-style-cnvs-list-styled-positive\">\n<li>Debugging a live site is vital because it exposes PHP code errors, WordPress database problems, and plugin conflicts that can affect the performance of your website.&nbsp;&nbsp;<\/li>\n\n\n\n<li>WordPress debug mode and logging errors are necessary for discovering the right information that can lead to accurate troubleshooting from the directory of your WordPress installation.&nbsp;<\/li>\n\n\n\n<li>WordPress comes with plugins like Query Monitor and Transients Manager to help enable the WordPress debug mode without using any line of code.&nbsp;&nbsp;<\/li>\n\n\n\n<li>Whether you&#8217;re debugging JavaScript or CSS code, it is essential to update your plugins and themes to reduce the chanc<strong>es <\/strong>of having any problems with WordPress.<\/li>\n<\/ul>\n\n\n\n<div class=\"cnvs-block-toc cnvs-block-toc-1776363361123\" >\n\t<\/div>\n\n\n\n<h2 id=\"h-what-is-wordpress-debug-mode\" class=\"wp-block-heading\"><span id=\"what-is-wordpress-debug-mode\"><strong>What is WordPress Debug Mode?<\/strong><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WordPress Debug Mode is a troubleshooting feature within WordPress that allows you to locate and solve any errors on your site. Since the Debug Mode is a built-in feature, it shows notices, PHP errors, and deprecated functions that are usually hidden in WordPress. The debugging settings allow <a href=\"https:\/\/hostonce.com\/blog\/what-is-web-hosting\/\" target=\"_blank\" rel=\"noreferrer noopener\">web hosting<\/a> users to understand how their site operates behind the scenes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">WP_DEBUG is a constant that powers the Debug Mode. In your WordPress root <strong>(wp-config.php file)<\/strong>, you can switch wp_debug to true or disable wp-debug. After activating it in the WordPress root folder, you can boost your <a href=\"https:\/\/hostonce.com\/blog\/wordpress-seo-optimization-tips\/\" target=\"_blank\" rel=\"noreferrer noopener\">WordPress SEO<\/a> and unlock extra tools like:<\/p>\n\n\n\n<ol class=\"wp-block-list is-style-cnvs-list-styled-positive\">\n<li><strong>WP_DEBUG_LOG:<\/strong> A tool that forces WordPress to use a log file to save errors.<\/li>\n\n\n\n<li><strong>SCRIPT_DEBUG: <\/strong>A tool that promotes faster troubleshooting by loading unminified CSS\/JS.<\/li>\n\n\n\n<li><strong>WP_DEBUG_DISPLAY:<\/strong> For displaying errors on the WordPress admin dashboard.&nbsp;&nbsp;&nbsp;&nbsp;<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div class=\"wp-block-cover\" style=\"min-height:177px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" class=\"wp-block-cover__image-background wp-image-5577\" alt=\"\" src=\"http:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-1024x538.png\" data-object-fit=\"cover\" srcset=\"https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-1024x538.png 1024w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-300x158.png 300w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-768x403.png 768w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-380x200.png 380w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-550x289.png 550w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-800x420.png 800w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-1160x609.png 1160w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading has-text-align-center\" id=\"h-avoid-common-wordpress-errors-today\"><span id=\"avoid-common-wordpress-errors-today\">Avoid common WordPress errors today!<\/span><\/h3>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">Are you new to WordPress? Get started with a beginner-friendly hosting that simplifies debugging. Launch your first WordPress site with Hostonce&#8217;s built-in tools and easy setup. <\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background has-text-align-center wp-element-button\" href=\"https:\/\/hostonce.com\/shared-hosting\" style=\"background-color:#0da438\" target=\"_blank\" rel=\"noreferrer noopener\">Enjoy Shared Hosting by Hostonce<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 id=\"h-how-wordpress-error-logging-works\" class=\"wp-block-heading\"><span id=\"how-wordpress-error-logging-works\"><strong>How WordPress Error Logging Works<\/strong><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WordPress error logging is an effective way to identify errors on your site. When enabled, every error is captured and written to a <strong>debug.log file<\/strong> in the wp-content directory. With this tool, you can safely perform <a href=\"https:\/\/hostonce.com\/blog\/what-is-web-caching\/\" target=\"_blank\" rel=\"noreferrer noopener\">web caching<\/a> and troubleshoot without visitors seeing it. Here is what to understand about WordPress error logging:&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<ol class=\"wp-block-list is-style-cnvs-list-styled-positive\">\n<li><strong>WP_DEBUG_LOG<\/strong> is used by WordPress to decide if error messages should be stored in a log file. When debugging is enabled, a file is created for storing related errors without affecting the site.&nbsp;<\/li>\n\n\n\n<li>This log file, which is stored in <strong>\/wp-content\/debug.log, <\/strong>can save errors like <a href=\"https:\/\/hostonce.com\/blog\/php-new-features-for-better-performance\/\">PHP 8.2<\/a> warnings, notices, deprecated functions, syntax errors, plugin conflicts, database problems, and so on. Remember that WordPress includes a timestamp for each file.<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/3da6b133-7732-4c7a-87be-9c232ecd1570-1024x683.png\" alt=\"How the process of WordPress error logging works\" class=\"wp-image-16240\" srcset=\"https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/3da6b133-7732-4c7a-87be-9c232ecd1570-1024x683.png 1024w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/3da6b133-7732-4c7a-87be-9c232ecd1570-300x200.png 300w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/3da6b133-7732-4c7a-87be-9c232ecd1570-768x512.png 768w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/3da6b133-7732-4c7a-87be-9c232ecd1570-380x253.png 380w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/3da6b133-7732-4c7a-87be-9c232ecd1570-550x367.png 550w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/3da6b133-7732-4c7a-87be-9c232ecd1570-800x533.png 800w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/3da6b133-7732-4c7a-87be-9c232ecd1570-1160x773.png 1160w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/3da6b133-7732-4c7a-87be-9c232ecd1570.png 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ol class=\"wp-block-list is-style-cnvs-list-styled-positive\">\n<li>Errors stay hidden from online visitors via define<strong>( &#8216;WP_DEBUG_DISPLAY&#8217;, false )<\/strong>. Keep in mind that WordPress will log them silently until you disable WP_DEBUG. This feature is perfect for live sites because it identifies the information you need to debug while maintaining <a href=\"https:\/\/hostonce.com\/blog\/bluehost-professional-email-hosting\/\" target=\"_blank\" rel=\"noreferrer noopener\">professionalism during email marketing<\/a>.<\/li>\n\n\n\n<li>You can enable logging by adding define<strong>( &#8216;WP_DEBUG&#8217;, true ); define( &#8216;WP_DEBUG_LOG&#8217;, true ); define( ;WP_DEBUG_DISPLAY&#8217;, false ) <\/strong>to your wp-config.php. This allows you to enable debugging, prevent users from seeing errors, and record errors privately.<\/li>\n<\/ol>\n\n\n\n<h2 id=\"h-how-to-enable-wordpress-debug-mode-wp-debug\" class=\"wp-block-heading\"><span id=\"how-to-enable-wordpress-debug-mode-wp-debug\"><strong>How to Enable WordPress Debug Mode (WP-DEBUG)<\/strong><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As we have said earlier, WordPress debug tools identify <a href=\"https:\/\/hostonce.com\/blog\/unique-wordpress-plugins-transform-your-website\/\" target=\"_blank\" rel=\"noreferrer noopener\">unique WordPress plugin<\/a> conflicts, PHP errors, and other problems that are usually hidden. If you don&#8217;t want to install a WordPress Debug Bar plugin, here is how to enable it from your domain hosting dashboard:&nbsp;<\/p>\n\n\n\n<h3 id=\"h-step-1-locate-your-wp-config-php-file\" class=\"wp-block-heading\"><span id=\"step-1-locate-your-wp-config-php-file\"><strong>Step 1: Locate Your wp-config.php File<\/strong><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The main purpose of the wp-config.php file is to configure important features, such as debugging. This file usually lives in the root directory of your WP installation <strong>(\/public_html\/wp-config.php \/yourdomain.com\/wp-config.php)<\/strong>. For <a href=\"https:\/\/hostonce.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Hostonce<\/a> users, you can access it via cPanel File Manager, the hosting dashboard, or FTP\/SFTP.&nbsp;<\/p>\n\n\n\n<h3 id=\"h-step-2-open-the-file-and-look-for-the-wp-debug-line\" class=\"wp-block-heading\"><span id=\"step-2-open-the-file-and-look-for-the-wp_debug-line\"><strong>Step 2: Open the File and Look for the WP_DEBUG Line<\/strong><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">After accessing the file via the WordPress hosting panel, look for [<strong>define( &#8216;WP_DEBUG&#8217;, false );<\/strong>]. If it is not there, you can add it before<strong> \/* That&#8217;s all, stop editing! Happy blogging. *\/<\/strong><\/p>\n\n\n\n<h3 id=\"h-step-3-turn-on-wp-debug\" class=\"wp-block-heading\"><span id=\"step-3-turn-on-wp_debug\"><strong>Step 3: Turn on WP_DEBUG<\/strong><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You can activate debugging mode by changing the value of wp-debug to true. For example, <strong>define (&#8216;WP_DEBUG&#8217;, true), <\/strong>and this will show different errors, conflicts, and deprecated functions affecting your <a href=\"https:\/\/hostonce.com\/domains\" target=\"_blank\" rel=\"noreferrer noopener\">domain<\/a> website<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div class=\"wp-block-group is-style-cnvs-block-bg-inverse has-green-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h4 class=\"wp-block-heading has-text-align-left\" id=\"h-highlight\"><span id=\"highlight\">Highlight<\/span><\/h4>\n\n\n\n<p class=\"has-text-align-left has-white-color has-text-color has-link-color has-medium-font-size wp-elements-7e6d092176ba96e84a400e4da8dbb0a7 wp-block-paragraph\"><br>Turn on WordPress debug mode by editing your wp-config.php file and setting WP_DEBUG to true. After that, you can enable WP_DEBUG_LOG and disable WP_DEBUG_DISPLAY to safely log errors without showing them to visitors<\/p>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 id=\"h-step-4-enable-log-only-debugging\" class=\"wp-block-heading\"><span id=\"step-4-enable-log-only-debugging\"><strong>Step 4: Enable Log-Only Debugging<\/strong><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Enabling log-only debugging will prevent your website from displaying errors to visitors. This feature allows you to log different errors into \/wp-content\/debug.log, hide sensitive <a href=\"https:\/\/hostonce.com\/blog\/wordpress-data-package-states\/\" target=\"_blank\" rel=\"noreferrer noopener\">WordPress data<\/a>, and errors. You can do this by using <strong>define( &#8216;WP_DEBUG_LOG&#8217;, true ); define( &#8216;WP_DEBUG_DISPLAY&#8217;, false ); @ini_set( &#8216;display_errors&#8217;, 0 );<\/strong><\/p>\n\n\n\n<h3 id=\"h-step-5-save-the-file-and-refresh-your-website\" class=\"wp-block-heading\"><span id=\"step-5-save-the-file-and-refresh-your-website\"><strong>Step 5: Save the File and Refresh Your Website<\/strong><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">After making changes to your wp-config.php file, you can save and reload the page. You will see a new file (<strong>debug.log<\/strong>) in the wp-content. After successful debugging, errors in the \/wp-content\/debug.log can be tracked and monitored. You can also use <a href=\"https:\/\/querymonitor.com\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Query Monitor Plugin<\/a> to track your website performance after debugging.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div class=\"wp-block-cover\" style=\"min-height:177px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" class=\"wp-block-cover__image-background wp-image-5577\" alt=\"\" src=\"http:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-1024x538.png\" data-object-fit=\"cover\" srcset=\"https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-1024x538.png 1024w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-300x158.png 300w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-768x403.png 768w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-380x200.png 380w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-550x289.png 550w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-800x420.png 800w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-1160x609.png 1160w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading has-text-align-center\" id=\"h-do-you-need-full-control-over-debugging\"><span id=\"do-you-need-full-control-over-debugging\">Do You Need Full Control Over Debugging?<\/span><\/h3>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">Upgrade to VPS hosting for advanced configurations. Take full control of your WordPress environment with scalable VPS hosting and custom debugging setups.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background has-text-align-center wp-element-button\" href=\"https:\/\/hostonce.com\/vps-hosting\" style=\"background-color:#0da438\" target=\"_blank\" rel=\"noreferrer noopener\">VPS Hosting Powered by Hostonce<\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 id=\"h-how-to-debug-wordpress-without-code\" class=\"wp-block-heading\"><span id=\"how-to-debug-wordpress-without-code\"><strong>How to Debug WordPress Without Code<\/strong><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">If you find the combination of wp_debug and wp-config.php overwhelming, many plugins like Debug Bar and WP Debugging can simplify the whole process for you. When you install and activate the plugin, you can debug your WordPress in one click. Here is how to debug your site without writing any code:&nbsp;<\/p>\n\n\n\n<ol class=\"wp-block-list is-style-cnvs-list-styled-positive\">\n<li><strong>Install the \u201cWP Debugging\u201d Plugin: <\/strong>This <a href=\"https:\/\/wpdebugtoolkit.com\/\">WP Debugging<\/a> plugin is designed for correcting debugging constants like WP_DEBUG_LOG. WP_DEBUG, SCRIPT_DEBUG, and WP_DEBUG_DISPLAY.<\/li>\n\n\n\n<li><strong>Enable Debugging: <\/strong>After downloading and installing the plugin, the debugging mode is activated automatically. Every error encountered on your website is shown in wp-content\/debug.log, making it a wonderful option for <a href=\"https:\/\/hostonce.com\/blog\/start-a-blog\/\">beginners.<\/a>&nbsp;<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"588\" height=\"393\" src=\"https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/images.png\" alt=\"A WordPress dashboard showing WP Debugging is done on the website\" class=\"wp-image-16244\" srcset=\"https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/images.png 588w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/images-300x201.png 300w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/images-380x254.png 380w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2026\/04\/images-550x368.png 550w\" sizes=\"auto, (max-width: 588px) 100vw, 588px\" \/><\/figure>\n\n\n\n<h2 id=\"h-common-wordpress-errors-you-can-fix-with-debugging\" class=\"wp-block-heading\"><span id=\"common-wordpress-errors-you-can-fix-with-debugging\"><strong>Common WordPress Errors You Can Fix With Debugging<\/strong><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WordPress Debug Mode is used to show <a href=\"https:\/\/hostonce.com\/blog\/improve-pagespeed-performance\/\" target=\"_blank\" rel=\"noreferrer noopener\">host-level optimization<\/a> problems that are affecting the speed and performance of a website. By activating the value of WP_DEBUG, you can identify and solve any errors. The following errors can be fixed with debugging:&nbsp;<\/p>\n\n\n\n<ol class=\"wp-block-list is-style-cnvs-list-styled-positive\">\n<li><strong>There Has Been a Critical Error on This Website: <\/strong>You get this type of error message when your site is having a fatal <a href=\"https:\/\/hostonce.com\/blog\/wordpress-memory-limit-fixing-and-increasing-php-memory\/\">PHP memory<\/a> error. Keeping debug mode shows the exact problem file and line number affecting the website.<\/li>\n\n\n\n<li><strong>Plugin Conflicts:<\/strong> There can be instances where your plugin can affect your website, leading to errors like deprecated functions, PHP error logs, duplicate declarations, and undefined functions\/classes. You can check the log to know the exact error from your <a href=\"https:\/\/hostonce.com\/blog\/installing-a-wordpress-theme-via-dashboard-zip-ftp-and-cpanel\/\">WordPress dashboard<\/a>.<\/li>\n\n\n\n<li><strong>Theme Errors and Broken Templates:<\/strong> Thanks to debugging, you can identify <a href=\"https:\/\/hostonce.com\/blog\/5-best-mobile-friendly-wordpress-themes\/\">WordPress theme<\/a> errors and broken templates. Incorrectly named functions, missing template files, and deprecated WordPress hooks tend to be the most common error types.<\/li>\n\n\n\n<li><strong>White Screen of Death (WSOD):<\/strong> WSOD error can be seen on a website when there is a fatal PHP error, a memory limit is reached, or an incompatible WordPress theme. Debugging can help to locate and neutralize WSOD for <a href=\"https:\/\/hostonce.com\/blog\/dedicated-hosting-services\/\">high-traffic websites<\/a>.<\/li>\n\n\n\n<li><strong>Deprecated Functions After Updates: <\/strong>After updating the version of your WordPress, older codes like <a href=\"https:\/\/hostonce.com\/blog\/key-changes-in-wordpress\/\">WordPress 6.8<\/a> can activate error messages like <strong>Deprecated: Function &lt;function_name&gt; is deprecated since WordPress version &lt;x.x.x.&gt;. <\/strong>Debugging also enables site stability by replacing outdated functions.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div class=\"wp-block-cover\" style=\"min-height:177px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" class=\"wp-block-cover__image-background wp-image-5577\" alt=\"\" src=\"http:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-1024x538.png\" data-object-fit=\"cover\" srcset=\"https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-1024x538.png 1024w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-300x158.png 300w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-768x403.png 768w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-380x200.png 380w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-550x289.png 550w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-800x420.png 800w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template-1160x609.png 1160w, https:\/\/hostonce.com\/blog\/wp-content\/uploads\/2025\/06\/Hostonce-Banner-1200-630-template.png 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading has-text-align-center\" id=\"h-don-t-break-your-live-site\"><span id=\"dont-break-your-live-site\">Don&#8217;t Break Your Live Site!<\/span><\/h3>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">Skip manual debugging and debug faster with hosting designed specifically for WordPress users. Let Hostonce handle performance, updates, and error tracking for your website<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background has-text-align-center wp-element-button\" href=\"https:\/\/hostonce.com\/wordpress-hosting\" style=\"background-color:#0da438\" target=\"_blank\" rel=\"noreferrer noopener\">Hostonce <strong><strong><strong>WordPress Hosting<\/strong><\/strong><\/strong><\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 id=\"h-best-practices-for-safe-wordpress-debugging\" class=\"wp-block-heading\"><span id=\"best-practices-for-safe-wordpress-debugging\"><strong>Best Practices for Safe WordPress Debugging<\/strong><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Debugging is a powerful way of fixing errors that may prevent your site from loading. To prevent mistakes during debugging, the following best practices are essential for <a href=\"https:\/\/hostonce.com\/blog\/boost-your-website-security\/\" target=\"_blank\" rel=\"noreferrer noopener\">keeping your website safe<\/a>:&nbsp;&nbsp;<\/p>\n\n\n\n<ol class=\"wp-block-list is-style-cnvs-list-styled-positive\">\n<li>Always use a staging environment like <a href=\"https:\/\/localwp.com\/\">LocalWP<\/a> for debugging. Website owners who subscribe to shared hosting get to enjoy premium staging tools from popular hosting providers.<\/li>\n\n\n\n<li>Use relevant debug information on your site. Permanently activating WP_DEBUG can expose your site and database details to hacking<\/li>\n\n\n\n<li>Do not show errors on-screen on live websites. You can use Debug Log to keep these errors hidden from people who visit your site.&nbsp;<\/li>\n\n\n\n<li>Avoid editing any code via the WordPress editor. You can use <a href=\"https:\/\/www.filestash.app\/sftp-client.html\">SFTP<\/a>, a testnet, or version control to prevent breaches while fixing your site<\/li>\n\n\n\n<li>After fixing the error, always clear your cache to prevent your website from hiding real-time changes.&nbsp;<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div class=\"wp-block-group is-style-cnvs-block-bg-inverse has-green-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h4 class=\"wp-block-heading has-text-align-left\" id=\"h-expert-tip\"><span id=\"expert-tip\">Expert Tip<\/span><\/h4>\n\n\n\n<p class=\"has-text-align-left has-white-color has-text-color has-link-color has-medium-font-size wp-elements-87d8094196908c68783be6903d0c3e82 wp-block-paragraph\">When debugging complex issues, enable WP_DEBUG_LOG and pair it with a tool like Query Monitor to trace errors back to the exact plugin, theme, or function causing the problem. This saves time compared to guessing or disabling plugins one by one.<\/p>\n\n\n\n<div class=\"wp-block-columns author-gap cnvs-block-core-columns-1757844157428 is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column cnvs-block-core-column-1757844161005 is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:0;padding-bottom:0;flex-basis:17%\"><div class=\"expert-tip-avatar wp-block-avatar\"><img alt='James Devlin Avatar' src='https:\/\/secure.gravatar.com\/avatar\/011d9788a91d9deed2e5c35df33d80ab3b8e30dd268432b647715cd8ad141afd?s=90&#038;d=mm&#038;r=g' srcset='https:\/\/secure.gravatar.com\/avatar\/011d9788a91d9deed2e5c35df33d80ab3b8e30dd268432b647715cd8ad141afd?s=180&#038;d=mm&#038;r=g 2x' class='avatar avatar-90 photo wp-block-avatar__image' height='90' width='90' \/><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top author-head is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--40);padding-bottom:var(--wp--preset--spacing--40);flex-basis:83%\">\n<h5 id=\"h-james-devlin\" class=\"wp-block-heading has-white-color has-text-color has-link-color cnvs-block-core-heading-1757957953275 wp-elements-e42e765be2903874eadc95d22196ce7d\"><span id=\"james-devlin\">James Devlin<\/span><\/h5>\n\n\n\n<p class=\"has-text-align-left has-white-color has-text-color has-link-color has-small-font-size cnvs-block-core-paragraph-1757845647806 wp-elements-4812492cc82bf52ba5d4cb1c1d3f6a1e wp-block-paragraph\">Experienced WordPress Manager<\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 id=\"h-final-thoughts-on-wp-debugging\" class=\"wp-block-heading\"><span id=\"final-thoughts-on-wp-debugging\"><strong>Final Thoughts on WP Debugging<\/strong><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WordPress debugging is an essential skillset for every website owner because it is perfect for detecting <a href=\"https:\/\/hostonce.com\/blog\/ddos-protection\/\" target=\"_blank\" rel=\"noreferrer noopener\">DDoS attacks<\/a> and fixing any errors immediately. If you do not know coding, you can use a plugin like Query Monitor for fast troubleshooting. With WordPress controlling 43% of all websites, debugging is the best way to protect your site and keep it running. Furthermore, you can also use <a href=\"https:\/\/hostonce.com\/blog\/wordpress-security-plugins\/\" target=\"_blank\" rel=\"noreferrer noopener\">WordPress security plugins<\/a> for extra security against any form of threat. If you have any questions or need assistance debugging your website, you can contact us on Twitter (X) to speak with a professional.&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<h2 id=\"h-faqs\" class=\"wp-block-heading\"><span id=\"faqs\"><strong>FAQs<\/strong><\/span><\/h2>\n\n\n<div ><style>#sp-ea-16236 .spcollapsing { height: 0; overflow: hidden; transition-property: height;transition-duration: 300ms;}#sp-ea-16236.sp-easy-accordion>.sp-ea-single {margin-bottom: 10px; border: 1px solid #e2e2e2; }#sp-ea-16236.sp-easy-accordion>.sp-ea-single>.ea-header a {color: #444;}#sp-ea-16236.sp-easy-accordion>.sp-ea-single>.sp-collapse>.ea-body {background: #fff; color: #444;}#sp-ea-16236.sp-easy-accordion>.sp-ea-single {background: #eee;}#sp-ea-16236.sp-easy-accordion>.sp-ea-single>.ea-header a .ea-expand-icon { float: left; color: #444;font-size: 16px;}.sp-easy-accordion>.sp-ea-single{\r\nbackground-color:#ffffff!important;\r\n}<\/style><div id=\"sp_easy_accordion-1776363540\"><div id=\"sp-ea-16236\" class=\"sp-ea-one sp-easy-accordion\" data-ea-active=\"ea-click\" data-ea-mode=\"vertical\" data-preloader=\"\" data-scroll-active-item=\"\" data-offset-to-scroll=\"0\"><div class=\"ea-card ea-expand sp-ea-single\"><h3 id=\"what-is-wp_debug-in-wordpress\" class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-162360\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse162360\" aria-controls=\"collapse162360\" href=\"#\" aria-expanded=\"true\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-minus\"><\/i> What is WP_DEBUG in WordPress?<\/a><\/h3><div class=\"sp-collapse spcollapse collapsed show\" id=\"collapse162360\" data-parent=\"#sp-ea-16236\" role=\"region\" aria-labelledby=\"ea-header-162360\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">WP_DEBUG is a built-in WordPress constant that enables debug mode. It helps developers and site owners identify PHP errors, warnings, and notices hidden on the site.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 id=\"how-do-i-enable-wp_debug-on-my-wordpress-site\" class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-162361\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse162361\" aria-controls=\"collapse162361\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> How do I enable WP_DEBUG on my WordPress site?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse162361\" data-parent=\"#sp-ea-16236\" role=\"region\" aria-labelledby=\"ea-header-162361\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">You can enable WP_DEBUG by editing the <\/span><span style=\"font-weight: 400\">wp-config.php<\/span><span style=\"font-weight: 400\"> file and adding <\/span><span style=\"font-weight: 400\">define(&#8216;WP_DEBUG&#8217;, true);<\/span><span style=\"font-weight: 400\">. For beginners, plugins like WP Debugging or hosting dashboards can activate it without code.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 id=\"what-are-the-benefits-of-using-wp_debug\" class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-162362\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse162362\" aria-controls=\"collapse162362\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> What are the benefits of using WP_DEBUG?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse162362\" data-parent=\"#sp-ea-16236\" role=\"region\" aria-labelledby=\"ea-header-162362\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">Using WP_DEBUG helps you identify plugin conflicts, theme errors, PHP notices, and database issues. It also allows you to log errors safely without displaying them to visitors.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 id=\"can-i-enable-debugging-without-editing-code\" class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-162363\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse162363\" aria-controls=\"collapse162363\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> Can I enable debugging without editing code?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse162363\" data-parent=\"#sp-ea-16236\" role=\"region\" aria-labelledby=\"ea-header-162363\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">Yes! You can use WordPress plugins like WP Debugging or Query Monitor, or enable debug mode directly from your hosting dashboard (e.g., Hostonce) to view logs safely.<\/span><\/p><\/div><\/div><\/div><div class=\"ea-card sp-ea-single\"><h3 id=\"how-do-i-safely-disable-debug-mode-after-troubleshooting\" class=\"ea-header\"><a class=\"collapsed\" id=\"ea-header-162364\" role=\"button\" data-sptoggle=\"spcollapse\" data-sptarget=\"#collapse162364\" aria-controls=\"collapse162364\" href=\"#\" aria-expanded=\"false\" tabindex=\"0\"><i aria-hidden=\"true\" role=\"presentation\" class=\"ea-expand-icon eap-icon-ea-expand-plus\"><\/i> How do I safely disable debug mode after troubleshooting?<\/a><\/h3><div class=\"sp-collapse spcollapse \" id=\"collapse162364\" data-parent=\"#sp-ea-16236\" role=\"region\" aria-labelledby=\"ea-header-162364\"> <div class=\"ea-body\"><p><span style=\"font-weight: 400\">After fixing issues, turn off debugging by setting <\/span><span style=\"font-weight: 400\">WP_DEBUG<\/span><span style=\"font-weight: 400\"> to <\/span><span style=\"font-weight: 400\">false<\/span><span style=\"font-weight: 400\"> in <\/span><span style=\"font-weight: 400\">wp-config.php<\/span><span style=\"font-weight: 400\">, and disable any debug plugins. This prevents sensitive error information from being exposed.<\/span><\/p><\/div><\/div><\/div><\/div><\/div><\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"Just like every software, the WordPress website also has its fair share of glitches and errors. 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