Fatal error: Uncaught Error: Interface "Extcode\Cart\Domain\Model\Cart\FeVariantInterface" not found in /var/www/html/dev.hallescherfc.de/vendor/extcode/cart/Classes/Domain/Model/Cart/FeVariant.php:14 Stack trace: #0 {main} thrown in /var/www/html/dev.hallescherfc.de/vendor/extcode/cart/Classes/Domain/Model/Cart/FeVariant.php on line 14