Fatal error: Uncaught Error: Call to undefined function add_action() in /var/www/html/olympiads/wp-content/plugins-tmp-06-2023/gutenberg/lib/experimental/fonts-api/register-fonts-from-theme-json.php:189 Stack trace: #0 {main} thrown in /var/www/html/olympiads/wp-content/plugins-tmp-06-2023/gutenberg/lib/experimental/fonts-api/register-fonts-from-theme-json.php on line 189