Fatal error: Uncaught Error: Class "WP_REST_Controller" not found in /usr/local/www/wordpress/wp-content/plugins/yet-another-related-posts-plugin/classes/YARPP_Rest_Api.php:6
Stack trace:
#0 {main}
thrown in /usr/local/www/wordpress/wp-content/plugins/yet-another-related-posts-plugin/classes/YARPP_Rest_Api.php on line 6