A WordPress fatal error is a PHP error that completely stops your website from running. It often shows a message like “There has been a critical error on this website.” Don’t panic – this guide will help you fix it step by step.
What Does a WordPress Fatal Error Look Like?
WordPress displays an error message on your site, and an email is usually sent to the admin with details. The email contains the exact file, line, and function causing the error.
Check the Error Message Email
WordPress automatically emails the site admin with a link to a recovery mode and details about the error. Check your admin email inbox first – it often points directly to the culprit.
Identify the Problem File
The error message will mention a specific file and line number, such as a plugin file or theme functions.php. The file name usually tells you which plugin or theme is at fault.
Disable the Problem Plugin or Theme
If the error points to a plugin, rename its folder in wp-content/plugins. If it points to a theme, rename the theme folder in wp-content/themes. This will deactivate it and restore your site.
Fix Common PHP Fatal Errors
Common fatal errors include “Cannot redeclare function”, “Call to undefined function”, and “Maximum execution time exceeded”. These usually mean a plugin or theme is outdated or has a conflict.
- Update all plugins and themes
- Delete the error-causing plugin and reinstall it fresh
- Check for compatibility with your WordPress version
Use WP_DEBUG to Find the Error
Add these lines to your wp-config.php to display errors during troubleshooting:
- define( ‘WP_DEBUG’, true );
- define( ‘WP_DEBUG_DISPLAY’, true );
Need Professional Help?
If the fatal error persists, contact Finggu Infotech. Our WordPress repair experts can fix critical errors fast and prevent them from recurring.