使用laravel强制下载文件

所以我正在使用Laravel 5,我试图强制下载所选文件,但没有任何反应.

public function downloadUserFile(){
        $result = $_POST['filename'];
        $entry = File::where('filename', $result)->firstOrFail();
        $file = Storage::disk()->get($entry->filePath);
        $headers = array('Content-Type' => $entry->mimetype);
        return response()->download(storage_path($entry->filePath), $result, $headers);
}

并且响应头似乎没问题

Accept-Ranges: none
Cache-Control: public
Connection: Keep-Alive
Content-Disposition: attachment; filename="SIGNAL - Nadezdata.mp3"
Content-Length: 4205059
Content-Type: audio/mpeg

你知道什么是错的吗？