Fatal error: Uncaught Error: Interface 'Cardinity\Method\MethodInterface' not found in /users/maximus/www/storage/vendor/cardinity/cardinity-sdk-php/src/Method/Refund/Get.php:8 Stack trace: #0 {main} thrown in /users/maximus/www/storage/vendor/cardinity/cardinity-sdk-php/src/Method/Refund/Get.php on line 8