Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/DynDNS/vendor/lkdevelopment/hetzner-cloud-php-sdk/tests/TestCase.php:16 Stack trace: #0 {main} thrown in /var/www/DynDNS/vendor/lkdevelopment/hetzner-cloud-php-sdk/tests/TestCase.php on line 16