Fatal error: Uncaught Error: Class "WP_List_Table" not found in /var/www/vhosts/awxpokmt.host213.checkdomain.de/htdocs/playground/gravitysleep/wp-admin/includes/class-wp-plugins-list-table.php:18 Stack trace: #0 {main} thrown in /var/www/vhosts/awxpokmt.host213.checkdomain.de/htdocs/playground/gravitysleep/wp-admin/includes/class-wp-plugins-list-table.php on line 18