Fatal error: Uncaught Error: Class 'TEC\Tickets\Emails\Email_Abstract' not found in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/Tickets/Emails/Email/Purchase_Receipt.php:22 Stack trace: #0 {main} thrown in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/Tickets/Emails/Email/Purchase_Receipt.php on line 22