cannot decode a qrcode

[athsx]

I try to decode a qrcode, but I cannot decode it. it give me a error

NotFoundException

but actully it is a normal qrcode, this is my pic.

that my code:

func DecodeFile(fi string)(string, error) {
    file, _ := os.Open(fi)
    img, _, _:= image.Decode(file)
    // prepare BinaryBitmap
    bmp, _:= gozxing.NewBinaryBitmapFromImage(img)
    // decode image
    result, err := qrcode.NewQRCodeReader().Decode(bmp, nil)
    if err != nil {
        return "", err
    }
    return result.String(), nil
}

[makiuchi-d]

That qrcode is distorted. There is 3px width modules and 4px width modules.

This is fixed image:

[athsx]

thank you!!