Fatal error: Uncaught Error: Class "TYPO3\CMS\Extbase\Property\TypeConverter\AbstractFileFolderConverter" not found in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-extbase/Classes/Property/TypeConverter/FileReferenceConverter.php:28 Stack trace: #0 {main} thrown in /home/rcmch/test.m-s-i.ch/vendor/typo3/cms-extbase/Classes/Property/TypeConverter/FileReferenceConverter.php on line 28