Fatal error: Uncaught Error: Class "WP_REST_Controller" not found in /var/www/html/wp-content/plugins/code-snippets/php/rest-api/class-snippets-rest-controller.php:28 Stack trace: #0 {main} thrown in /var/www/html/wp-content/plugins/code-snippets/php/rest-api/class-snippets-rest-controller.php on line 28