Fatal error: Uncaught Error: Call to undefined function apply_filters() in /home/workings/public_html/hidden/wp-content/plugins/ninja-forms/includes/Config/AvailableActions.php:3 Stack trace: #0 {main} thrown in /home/workings/public_html/hidden/wp-content/plugins/ninja-forms/includes/Config/AvailableActions.php on line 3