Fatal error: Uncaught Error: Call to undefined function add_action() in C:\xampp\htdocs\krustpilsbaznica.lv\public_html\wp-content\plugins\jetpack\modules\widgets\upcoming-events.php:18 Stack trace: #0 {main} thrown in C:\xampp\htdocs\krustpilsbaznica.lv\public_html\wp-content\plugins\jetpack\modules\widgets\upcoming-events.php on line 18