Fatal error: Uncaught Error: Call to undefined function EVO() in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-rsvp/templates/confirmation_email.php:10 Stack trace: #0 {main} thrown in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-rsvp/templates/confirmation_email.php on line 10