Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /opt/lampp/htdocs/msjbom/vendor/maennchen/zipstream-php/test/ZipStreamTest.php:29 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/msjbom/vendor/maennchen/zipstream-php/test/ZipStreamTest.php on line 29