Fatal error: Uncaught Error: Class "WP_List_Table" not found in C:\xampp\htdocs\wordpress\wp-admin\includes\class-wp-ms-sites-list-table.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wordpress\wp-admin\includes\class-wp-ms-sites-list-table.php on line 17