ARM [WARN] Received http status code 404 ("Not found") from server ''

My whonix gateway works fine as i understand, but sometimes i get this error in arm.

[WARN] Received http status code 404 (“Not found”) from server ‘’ while fetching “/tor/keys/fp/*********/”

Is it bad ?

Not very bad. Because arm is conceptually not a tool to detect anything bad such as leaks. It’s a Tor controller, so it has a very different purpose and cannot find out about “bad” things.

I don’t know what specifically could cause this, but there are a lot other confusing messages by arm, which are documented here: