Fatal error: Uncaught Error: Call to undefined function wp_nonce_field() in D:\xampp\htdocs\licenciaturas\comsoc\wp-content\plugins\the-events-calendar\src\admin-views\metabox\compatibility\events-control-extension\mark-online.php:26 Stack trace: #0 {main} thrown in D:\xampp\htdocs\licenciaturas\comsoc\wp-content\plugins\the-events-calendar\src\admin-views\metabox\compatibility\events-control-extension\mark-online.php on line 26