Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /newdata/themendco/public_html/tmp1.mwz/vendor1/league/oauth1-client/tests/ClientCredentialsTest.php:9 Stack trace: #0 {main} thrown in /newdata/themendco/public_html/tmp1.mwz/vendor1/league/oauth1-client/tests/ClientCredentialsTest.php on line 9