Fatal error: Uncaught Error: Class "WP_List_Table" not found in C:\xampp\htdocs\wp-content\plugins\nextgen-gallery\src\Legacy\admin\manage-galleries.php:633 Stack trace: #0 {main} thrown in C:\xampp\htdocs\wp-content\plugins\nextgen-gallery\src\Legacy\admin\manage-galleries.php on line 633