Fatal error: Uncaught Error: Interface "ILIAS\AdvancedMetaData\Data\PersistenceTrackingData" not found in /var/www/html/ilias/components/ILIAS/AdvancedMetaData/classes/Data/PersistenceTrackingDataImplementation.php:23 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/AdvancedMetaData/classes/Data/PersistenceTrackingDataImplementation.php on line 23