Fatal error: Uncaught Error: Interface "StudyProgrammeEvents" not found in /var/www/html/ilias/components/ILIAS/StudyProgramme/classes/Events/class.PRGNullEvents.php:22 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/StudyProgramme/classes/Events/class.PRGNullEvents.php on line 22