Fatal error: Uncaught Error: Interface "ilCertificateFormRepository" not found in /var/www/html/ilias/components/ILIAS/Exercise/Certificate/CertificateSettingsExerciseRepository.php:43 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Exercise/Certificate/CertificateSettingsExerciseRepository.php on line 43