Fatal error: Uncaught Error: Class "Cardinity\Tests\ClientTestCase" not found in /home/metristep1/public_html/storage98/vendor/cardinity/cardinity-sdk-php/tests/PaymentTest.php:8 Stack trace: #0 {main} thrown in /home/metristep1/public_html/storage98/vendor/cardinity/cardinity-sdk-php/tests/PaymentTest.php on line 8