Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/corporatenwocp/public_html/vendor/solspace/craft3-commons/tests/Solspace/Commons/Helpers/StringHelperTest.php:7 Stack trace: #0 {main} thrown in /home/corporatenwocp/public_html/vendor/solspace/craft3-commons/tests/Solspace/Commons/Helpers/StringHelperTest.php on line 7