Fatal error: Uncaught Error: Class "ILIAS\Setup\Artifact\BuildArtifactObjective" not found in /var/www/html/ilias/components/ILIAS/UICore/classes/Setup/Artifact/class.ilCtrlStructureArtifactObjective.php:31 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/UICore/classes/Setup/Artifact/class.ilCtrlStructureArtifactObjective.php on line 31