Fatal error: Uncaught Error: Class "WP_REST_Controller" not found in /home/x32tai/public_html/wp-includes/rest-api/endpoints/class-wp-rest-widgets-controller.php:17 Stack trace: #0 {main} thrown in /home/x32tai/public_html/wp-includes/rest-api/endpoints/class-wp-rest-widgets-controller.php on line 17