Fatal error: Uncaught Error: Class "TYPO3\CMS\Extbase\DomainObject\AbstractEntity" not found in /var/www/html/dev.hallescherfc.de/vendor/typo3/cms-extensionmanager/Classes/Domain/Model/Extension.php:27 Stack trace: #0 {main} thrown in /var/www/html/dev.hallescherfc.de/vendor/typo3/cms-extensionmanager/Classes/Domain/Model/Extension.php on line 27