Fatal error: Uncaught Error: Using $this when not in object context in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/views/v2/commerce/checkout/header.php:30 Stack trace: #0 {main} thrown in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/views/v2/commerce/checkout/header.php on line 30