Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/iotechtniu/ioacademy/vendor/knpuniversity/oauth2-client-bundle/tests/KnpUOAuth2ClientBundleTest.php:17 Stack trace: #0 {main} thrown in /home/iotechtniu/ioacademy/vendor/knpuniversity/oauth2-client-bundle/tests/KnpUOAuth2ClientBundleTest.php on line 17