Fatal error: Uncaught Error: Class 'OxidEsales\TestingLibrary\ServiceCaller' not found in /www/shop/vendor/fatchip-gmbh/oxid-klarna-6/Tests/additional.inc.php:4 Stack trace: #0 {main} thrown in /www/shop/vendor/fatchip-gmbh/oxid-klarna-6/Tests/additional.inc.php on line 4