Homeassistant UI not responding after a day or so

I’m on Docker, on Mac, running the latest.
Every day or so, Lovelace stops responding. The connection hangs, until it times out.
Messages in the log file keep appearing so the system is not dead, however I can’t access the UI.
Also, if I access the docker shell
docker exec -it home-assistant /bin/bash
I can see that the python process is still running.

The only suspicious messages I see are the following

2020-06-16 22:30:21 ERROR (MainThread) [backoff] Giving up call_api(…) after 5 tries (concurrent.futures._base.TimeoutError)
2020-06-16 22:30:21 INFO (MainThread) [hacs] HACS is ratelimited, repository updates will resume later.

Any idea on how to figure out what is going on?

Restarting docker “fixes” it…

I am having the same problem since a while and I found your post after searching for the error message in the log. I am running the Home assistant supervised on Ubuntu 18.04 on a NUC. Have you solved it?