Fatal error: Uncaught Error: Call to undefined function tribe() in /home/malvernj/public_html/wp-content/plugins/event-tickets-plus/src/admin-views/editor/settings-attendees.php:11 Stack trace: #0 {main} thrown in /home/malvernj/public_html/wp-content/plugins/event-tickets-plus/src/admin-views/editor/settings-attendees.php on line 11