Fatal error: Uncaught Error: Interface "ILIAS\Certificate\API\UserCertificateApiInterface" not found in /var/www/html/ilias/components/ILIAS/Certificate/classes/API/UserCertificateAPI.php:42 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Certificate/classes/API/UserCertificateAPI.php on line 42