Fatal error: Uncaught Error: Class 'OxidEsales\Eshop\Application\Controller\FrontendController' not found in /www/shop/vendor/fatchip-gmbh/oxid-klarna-6/Controller/KlarnaAcknowledgeController.php:33 Stack trace: #0 {main} thrown in /www/shop/vendor/fatchip-gmbh/oxid-klarna-6/Controller/KlarnaAcknowledgeController.php on line 33