Fatal error: Uncaught Error: Call to undefined function add_action() in /var/www/html/olympiads/wp-content/plugins-tmp-06-2023/gutenberg/build/widgets/blocks/widget-group.php:55 Stack trace: #0 {main} thrown in /var/www/html/olympiads/wp-content/plugins-tmp-06-2023/gutenberg/build/widgets/blocks/widget-group.php on line 55