image resize failed with error：magicsave_buffer: libMagick error: no decode delegate for this image format

I read my BMP file and use the following code:

image := bimg.NewImage(bytes)
bytes, err = image.Resize(nW, nH)
if err != nil {
    return nil, err
}

err is not nil and message is: magicsave_buffer: libMagick error: no decode delegate for this image format `' @ error/blob.c/ImageToBlob/2452\n

I guess it may be something wrong with my libMagick or libvips, but both convert and vipsthumbnail works fine.

So it there something special in bimg?

my lib version: libvips 8.12 imagemagick 7.1.0 bimg v2.0 (both master and dev branch is tested, and 2.0-dev branch err in image.Save)

h2non / bimg