Fatal error: Uncaught TYPO3\CMS\Extbase\Property\Exception\InvalidSourceException: The identity property "voest_alpine_ag" is no UID. in /usr/www/users/cpunkk/vendor/typo3/cms/typo3/sysext/extbase/Classes/Property/TypeConverter/PersistentObjectConverter.php:222 Stack trace: #0 /usr/www/users/cpunkk/vendor/typo3/cms/typo3/sysext/extbase/Classes/Property/TypeConverter/PersistentObjectConverter.php(158): TYPO3\CMS\Extbase\Property\TypeConverter\PersistentObjectConverter->fetchObjectFromPersistence('voest_alpine_ag', 'St\\StNews\\Domai...') #1 /usr/www/users/cpunkk/vendor/typo3/cms/typo3/sysext/extbase/Classes/Property/PropertyMapper.php(201): TYPO3\CMS\Extbase\Property\TypeConverter\PersistentObjectConverter->convertFrom('voest_alpine_ag', 'St\\StNews\\Domai...', Array, Object(TYPO3\CMS\Extbase\Mvc\Controller\MvcPropertyMappingConfiguration)) #2 /usr/www/users/cpunkk/vendor/typo3/cms/typo3/sysext/extbase/Classes/Property/PropertyMapper.php(118): TYPO3\CMS\Extbase\Property\PropertyMapper->doMapping('voest_alpine_ag', 'St\\StN in /usr/www/users/cpunkk/vendor/typo3/cms/typo3/sysext/extbase/Classes/Property/PropertyMapper.php on line 127