Fatal error: Uncaught Error: Call to a member function is_in_stock() on null in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/views/v2/rsvp/actions.php:28 Stack trace: #0 {main} thrown in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/views/v2/rsvp/actions.php on line 28