Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /opt/lampp/htdocs/kuesioner/vendor/phpunit/php-token-stream/tests/Token/ClassTest.php:13 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/kuesioner/vendor/phpunit/php-token-stream/tests/Token/ClassTest.php on line 13