Fatal error: Uncaught Error: Class "Cardinity\Tests\ClientTestCase" not found in C:\AppServ\www\greenhess-storage\vendor\cardinity\cardinity-sdk-php\tests\PaymentTest.php:7 Stack trace: #0 {main} thrown in C:\AppServ\www\greenhess-storage\vendor\cardinity\cardinity-sdk-php\tests\PaymentTest.php on line 7