I am trying to create zip file using php package zip stream but it seems like its not creating proper zip, after download i cant be able to open it on mac and windows too, when i checked with online tool it say empty zip. could some body help me in this regard. attached code snippet

$zip = new ZipStreamZipStream(
                    outputName: 'test.zip',
                    // defaultEnableZeroHeader: true,
                    sendHttpHeaders: true,
                    contentType: 'application/x-zip',
                    
                );

                $zip->addFile(
                    fileName: 'hello.txt',
                    data: 'This is the contents of hello.txt',
                    compressionMethod : CompressionMethod::DEFLATE,
                    
                    // deflateLevel: 9
                );



                return $zip->finish();

i tried with multiple php packages but getting same result with all of them