Fatal error: Uncaught Error: Using $this when not in object context in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/views/registration/attendees/fields/radio.php:15 Stack trace: #0 {main} thrown in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/views/registration/attendees/fields/radio.php on line 15