Fatal error: Uncaught Error: Class "TYPO3\CMS\Extbase\DomainObject\AbstractEntity" not found in /var/www/html/dev.hallescherfc.de/packages/hfcmembership/Classes/Domain/Model/MembershipOption.php:7 Stack trace: #0 {main} thrown in /var/www/html/dev.hallescherfc.de/packages/hfcmembership/Classes/Domain/Model/MembershipOption.php on line 7