I happen to have a german local set normally on my Ubuntu 18.04 workstation.
Today I was messing around learning snapcraft (2.42.1, installed with snap), and got the error:
Failed to detect container architecture: The output from ‘lxc info’ could not be read:
from snapcraft cleanbuild. Setting my locale to english got rid of the problem.
I noticed a couple russian posts about the same issue, so I’m not the first to hit this.