Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/lcanetwork/public_html/qr/vendor/postfinancecheckout/sdk/test/TransactionLightboxServiceTest.php:39 Stack trace: #0 {main} thrown in /home/lcanetwork/public_html/qr/vendor/postfinancecheckout/sdk/test/TransactionLightboxServiceTest.php on line 39