Fatal error: Uncaught Error: Interface "UnzerSDK\Adapter\HttpAdapterInterface" not found in /var/www/html/dev.hallescherfc.de/vendor/unzerdev/php-sdk/test/unit/Services/DummyAdapter.php:16 Stack trace: #0 {main} thrown in /var/www/html/dev.hallescherfc.de/vendor/unzerdev/php-sdk/test/unit/Services/DummyAdapter.php on line 16