Fatal error: Uncaught Error: Interface "ILIAS\UI\Component\Table\DataRetrieval" not found in /var/www/html/ilias/components/ILIAS/Mail/classes/Folder/MailFolderTableUI.php:47 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Mail/classes/Folder/MailFolderTableUI.php on line 47