Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/cwtypo3/vendor/gmostafa/php-graphql-client/tests/ResultsTest.php:18 Stack trace: #0 {main} thrown in /var/www/html/cwtypo3/vendor/gmostafa/php-graphql-client/tests/ResultsTest.php on line 18