Fatal error: Uncaught Error: Class "ilPropertyFormGUI" not found in /var/www/html/ilias/components/ILIAS/StudyProgramme/classes/types/class.ilStudyProgrammeTypeCustomIconsFormGUI.php:30 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/StudyProgramme/classes/types/class.ilStudyProgrammeTypeCustomIconsFormGUI.php on line 30