Fatal error: Uncaught Error: Class "WP_REST_Controller" not found in /data09/c1501978/public_html/wp-includes/rest-api/endpoints/class-wp-rest-abilities-v1-list-controller.php:19 Stack trace: #0 {main} thrown in /data09/c1501978/public_html/wp-includes/rest-api/endpoints/class-wp-rest-abilities-v1-list-controller.php on line 19