Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/app/htdocs/truebits.docker.installations/invoice-crater/docker.app/crater/vendor/maennchen/zipstream-php/test/ZipStreamTest.php:18 Stack trace: #0 {main} thrown in /home/app/htdocs/truebits.docker.installations/invoice-crater/docker.app/crater/vendor/maennchen/zipstream-php/test/ZipStreamTest.php on line 18