Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/startmine/api.startmine.info/vendor/imdhemy/google-play-billing/tests/ValueObjects/EmptyResponseTest.php:9 Stack trace: #0 {main} thrown in /home/startmine/api.startmine.info/vendor/imdhemy/google-play-billing/tests/ValueObjects/EmptyResponseTest.php on line 9