Fatal error: Uncaught Error: Call to undefined function esc_attr() in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/views/registration-js/attendees/fields/telephone.php:17 Stack trace: #0 {main} thrown in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/views/registration-js/attendees/fields/telephone.php on line 17