Xpra attach throw a python's wrong about "gobject"

[yhaoyan]

Hi,

My system is CentOS 7. I build a container by using the image “docker-desktop”.
https://github.com/rogaha/docker-desktop

After the container run successful, I use the follow command to attach to the session,
xpra --ssh="ssh -p 32770" attach ssh:docker@192.168.56.102:10

However, the shell gave back a wrong as follow,

I am sue I use the latest module "gobject" . Can you help me solve the problem?

Thanks.