Fatal error: Uncaught Error: Class 'WP_REST_Controller' not found in /home/marshalltowncsd/sites/marshalltown.k12.ia.us/releases/20230829083101/web/app/plugins/regenerate-thumbnails/includes/class-regeneratethumbnails-rest-controller.php:14 Stack trace: #0 {main} thrown in /home/marshalltowncsd/sites/marshalltown.k12.ia.us/releases/20230829083101/web/app/plugins/regenerate-thumbnails/includes/class-regeneratethumbnails-rest-controller.php on line 14