Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/projectsciphersq/public_html/vendor/jolicode/jolinotif/tests/Util/OsHelperTest.php:17 Stack trace: #0 {main} thrown in /home/projectsciphersq/public_html/vendor/jolicode/jolinotif/tests/Util/OsHelperTest.php on line 17