Fatal error: Uncaught Error: Class 'Pimcore\Model\DataObject\ClassDefinition' not found in /home/realadvivf/old_versions/V2.0.3/install-profiles/demo-basic-twig/var/classes/definition_news.php:23 Stack trace: #0 {main} thrown in /home/realadvivf/old_versions/V2.0.3/install-profiles/demo-basic-twig/var/classes/definition_news.php on line 23