Fatal error: Uncaught Error: Class "ILIAS\BackgroundTasks\Implementation\Values\AbstractValue" not found in /var/www/html/ilias/components/ILIAS/BackgroundTasks_/classes/class.ilCopyDefinition.php:27 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/BackgroundTasks_/classes/class.ilCopyDefinition.php on line 27