Fatal error: Uncaught Error: Class "ilXmlExporter" not found in /var/www/html/ilias/components/ILIAS/LearningModule/Export/class.ilLearningModuleExporter.php:24 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/LearningModule/Export/class.ilLearningModuleExporter.php on line 24