Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/lobby11shareacop/public_html/backend/vendor/bshaffer/oauth2-server-php/test/OAuth2/RequestTest.php:10 Stack trace: #0 {main} thrown in /home/lobby11shareacop/public_html/backend/vendor/bshaffer/oauth2-server-php/test/OAuth2/RequestTest.php on line 10