Fatal error: Uncaught Error: Class 'OxidEsales\Eshop\Core\Model\BaseModel' not found in /www/shop/vendor/fatchip-gmbh/oxid-klarna-6/Model/KlarnaInstantBasket.php:11 Stack trace: #0 {main} thrown in /www/shop/vendor/fatchip-gmbh/oxid-klarna-6/Model/KlarnaInstantBasket.php on line 11