Fatal error: Uncaught Error: Class 'WP_REST_Controller' not found in /home/cerio353/public_html/wp-includes-59/rest-api/endpoints/class-wp-rest-url-details-controller.php:18 Stack trace: #0 {main} thrown in /home/cerio353/public_html/wp-includes-59/rest-api/endpoints/class-wp-rest-url-details-controller.php on line 18