Fatal error: Uncaught Error: Call to undefined function apply_filters() in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/admin-views/tec-tickets-options-network.php:2 Stack trace: #0 {main} thrown in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/admin-views/tec-tickets-options-network.php on line 2