Fatal error: Uncaught Error: Interface "ilMailAddressList" not found in /var/www/html/ilias/components/ILIAS/Mail/classes/Address/class.ilMailOnlyExternalAddressList.php:25 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Mail/classes/Address/class.ilMailOnlyExternalAddressList.php on line 25