Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /var/www/typo3/vendor/typo3/class-alias-loader/tests/Unit/BaseTestCase.php:13 Stack trace: #0 {main} thrown in /var/www/typo3/vendor/typo3/class-alias-loader/tests/Unit/BaseTestCase.php on line 13