Fatal error: Uncaught Error: Interface "ILIAS\GlobalScreen\Identification\Serializer\SerializerInterface" not found in /var/www/html/ilias/components/ILIAS/GlobalScreen/src/Identification/Serializer/CoreSerializer.php:32 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/GlobalScreen/src/Identification/Serializer/CoreSerializer.php on line 32