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/RSVP.php:24 Stack trace: #0 {main} thrown in /home/malvernj/public_html/wp-content/plugins/event-tickets/src/Tickets/Emails/Email/RSVP.php on line 24