I just updated to the latest docker container 2021.11.5 and am seeing that error too. It was working fine on my older docker container 2021.1.4. Not sure what changed as it’s working when I run it from command line inside the container.
It is strange- glad I’m not the only one. I’m not sure what to do with it, anybody have any ideas on what to try (or failing that, where to file an issue for someone to look into)?
File an issue in core.