Fatal error: Uncaught Error: Class 'WP_REST_Controller' not found in /var/www/html/olympiads/wp-content/plugins-tmp-06-2023/gutenberg/lib/experimental/class-gutenberg-rest-global-styles-revisions-controller.php:17 Stack trace: #0 {main} thrown in /var/www/html/olympiads/wp-content/plugins-tmp-06-2023/gutenberg/lib/experimental/class-gutenberg-rest-global-styles-revisions-controller.php on line 17