Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/qld/public_html/tube1/Update Guide/v3.1/assets/libs/payfastSDK/vendor/payfast/payfast-php-sdk/tests/PaymentIntegrations/OnsiteIntegrationTest.php:8 Stack trace: #0 {main} thrown in /home/qld/public_html/tube1/Update Guide/v3.1/assets/libs/payfastSDK/vendor/payfast/payfast-php-sdk/tests/PaymentIntegrations/OnsiteIntegrationTest.php on line 8