Fatal error: Uncaught Error: Class "WP_REST_Controller" not found in /home/drapoza/public_html/wp-content/plugins/nextgen-gallery/src/REST/Admin/AttachToPost.php:14 Stack trace: #0 {main} thrown in /home/drapoza/public_html/wp-content/plugins/nextgen-gallery/src/REST/Admin/AttachToPost.php on line 14