Fatal error: Uncaught Error: Interface "TYPO3\CMS\Install\SystemEnvironment\CheckInterface" not found in /var/www/html/dev.hallescherfc.de/vendor/typo3/cms-install/Classes/SystemEnvironment/Check.php:44 Stack trace: #0 {main} thrown in /var/www/html/dev.hallescherfc.de/vendor/typo3/cms-install/Classes/SystemEnvironment/Check.php on line 44