I can currently not explain this error. Is super strange. Have honestly never seen that before. What n8n version are you running (you somehow mention 0.159.1 and 0.169.0)? Do you really run the default n8n docker images (if so which exactly) as they are published without any changes? What operating system are you using? How does the docker-compose file look like?
I have just given this a test on a Pi I have here and using a simple compose file 0.170.0 appears to be working fine, I am using Ubuntu Server 20.04 on my pi with Docker 20.10.12 and compose 1.25.0
What version of libseccomp2 does Buster use? A quick look on the package site suggests it is 2.3.3-4, It looks like the backports repo has a newer version which lookign at the Github issue could be something else needed.
Is there also more to your compose file? The error output mentions a network being used that isn’t in your compose file which seems odd.
I would start with checking libseccomp2 anyway (apt list libseccomp2) to see what that is, For me it is 2.5.1-1. If I get a chance I can reflash my Pi to use Buster but I am not sure when I will be able to do that.
That could be it, So there is an updated version available in the buster backports source list so you could possibly add that do an update and see if it works.