Fatal error: Uncaught Error: Interface "TYPO3\CMS\Extbase\Validation\Validator\ValidatorInterface" not found in /var/www/html/dev.hallescherfc.de/vendor/typo3/cms-extbase/Classes/Validation/Validator/AbstractValidator.php:28 Stack trace: #0 {main} thrown in /var/www/html/dev.hallescherfc.de/vendor/typo3/cms-extbase/Classes/Validation/Validator/AbstractValidator.php on line 28