Fatal error: Uncaught Error: Class "WP_REST_Controller" not found in /home/urgencp/www/wp-content/plugins/html5-video-player/inc/Rest/VideoController.php:5 Stack trace: #0 {main} thrown in /home/urgencp/www/wp-content/plugins/html5-video-player/inc/Rest/VideoController.php on line 5