Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /www/shop/vendor/oxid-esales/oxideshop-demodata-installer/tests/Unit/DemoDataPathSelectorTest.php:30 Stack trace: #0 {main} thrown in /www/shop/vendor/oxid-esales/oxideshop-demodata-installer/tests/Unit/DemoDataPathSelectorTest.php on line 30