Fatal error: Uncaught Error: Class "ilXmlWriter" not found in /var/www/html/ilias/components/ILIAS/AccessControl/classes/class.ilRoleXmlExport.php:25 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/AccessControl/classes/class.ilRoleXmlExport.php on line 25