Fatal error: Uncaught Error: Interface "ILIAS\Export\ImportHandler\I\Parser\NodeInfo\Attribute\CollectionInterface" not found in /var/www/html/ilias/components/ILIAS/Export/classes/ImportHandler/Parser/NodeInfo/Attribute/Collection.php:28 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Export/classes/ImportHandler/Parser/NodeInfo/Attribute/Collection.php on line 28