Fatal error: Uncaught Error: Class "ILIAS\StudyProgramme\Assignment\Node" not found in /var/www/html/ilias/components/ILIAS/StudyProgramme/classes/model/Assignments/class.ilPRGProgress.php:27 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/StudyProgramme/classes/model/Assignments/class.ilPRGProgress.php on line 27