Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /opt/lampp/htdocs/kuesioner/vendor/sebastian/global-state/tests/SnapshotTest.php:24 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/kuesioner/vendor/sebastian/global-state/tests/SnapshotTest.php on line 24