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How to Fix the WordPress “Critical Error” on the Widgets Page After a PHP Upgrade
Upgrading your server to PHP 8+ is essential for site performance and security, but it can occasionally trigger unexpected backend crashes. A common issue after a PHP upgrade is navigating to Appearance > Widgets (/wp-admin/widgets.php) only to be greeted by the dreaded message:
"There has been a critical error on this website. Please check your site admin email inbox for instructions."
If your post editor works fine but your widget manager suddenly throws a critical error, the culprit is almost
... Continue reading
Posted in WordPress Customization
Tagged array_merge, backend crash, cpanel, critical error, database, fatal exception, file manager, ftp, mysql, php, php 8, php error message, php upgrade, phpmyadmin, sidebars_widgets, site performance, sql query, strict typing, TypeError, website security, wordpress debug mode, WP_DEBUG, wp_options, wp-config.php
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