Traefik Log contains lots of "context cancelled" errors

[binomnom]

Hi
Similar issues have been opened before: namely #1256 and #446

I am seeing lots of the following error in my Traefik log:

2026-05-25T12:59:35+02:00 ERR Error calling http://anubis:8080/.within.website/x/cmd/anubis/api/check error="Get \"http://anubis:8080/.within.website/x/cmd/anubis/api/check\": context canceled" middlewareName=anubis@docker middlewareType=ForwardAuth

My main question is: are those errors benign or do they point to a misconfiguration of my setup?
From my limited understanding this happens when the browser closes connection while a request is being diverted to the middleware, is that correct?

Setup Overview:
Traefik -> Anubis ForwardAuth middleware -> Services (Authentik, Vikunja, Outline)
All containerized and orchestrated with Docker Compose. Middleware defined using labels, not the Traefik config. Anubis v1.25.0, Traefik v3.7

Thank you for your time!

[Xe]

Those errors usually come from the client hanging up, which makes traefik cancel the request context, which then bubbles up in the form of an error being returned, causing it to be logged to the traefik logging endpoint. I'd suggest ignoring them unless they directly correlate with observable user issues. You may want to contact the traefik team for help with configuring the logging stack to automatically filter those log lines.

[binomnom]

Thanks for the speedy answer, Xe! I see, that makes sense.
I don't mind the messages per se, I just wasn't sure if all those interrupted connections point to an issue with my configuration. But there is nothing really noticeable from an end user's perspective, so I think I'll just leave it at that.