Fatal error: Uncaught Error: Class "ilTree" not found in /var/www/html/ilias/components/ILIAS/Scorm2004/classes/class.ilSCORM2004Tree.php:26 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Scorm2004/classes/class.ilSCORM2004Tree.php on line 26