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