How to fix Warning: Undefined array key “accepted_args” in WordPress site?

The “Warning: Undefined array key ‘accepted_args'” error in WordPress typically occurs when a function or action hook is missing or incorrectly using the 'accepted_args' key in a filter or action hook registration. This could happen due to outdated code, a...

Fatal error trying to install or upgrade any plugin or theme

Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, false given in /var/www/html/wp-admin/includes/class-wp-upgrader.php:556 Stack trace: #0 /var/www/html/wp-admin/includes/class-wp-upgrader.php(556): array_keys() #1 /var/www/html/wp-admin/includes/class-wp-upgrader.php(876): WP_Upgrader->install_package() #2 /var/www/html/wp-admin/includes/class-plugin-upgrader.php(135): WP_Upgrader->run() #3 /var/www/html/wp-admin/update.php(176): Plugin_Upgrader->install() #4 {main} thrown in /var/www/html/wp-admin/includes/class-wp-upgrader.php on line 556The error message is related...

How to fix Warning: Undefined property in wordpress?

Error: Warning: Undefined property: stdClass::$plugin in /home/badshaht/domainurl/wp-includes/class-wp-list-util.php on line 167The warning message Warning: Undefined property: stdClass::$plugin in /home/badshaht/domainurl/wp-includes/class-wp-list-util.php on line 167, is indicative of a PHP issue in your WordPress environment. This type of warning usually occurs due to one...