Home assistant on raspberry pi 4 stops working

hello, for few months I have this issue that suddenly (almost every day) my HA on RPi4 stops working. I can’t connect to this, I see that it’s connected to the router (wired connection). When HA is not responding, the led on SSD does not blink anymore, as usual, but only solid light. The only way I can get it to working is by power cycling the RPi4.

I set up another HA in a virtual machine on NUC to observe my main HA, whether it is accessible via this plugin. and toggle the smart switch of the main HA. Here is the log for this. you can see how often it restarts.

Initially, I thought it may be related to my new router (Ubiquity UDM), but since last week I am using a different router and the problem still exists.

If anyone has any idea how to debug the issue, please share. I can’t connect any monitor to the pi now, because I don’t have any. I can connect to pi with putty from my laptop. but don’t know what to look for.

A first step is probably to tell how you run HA on your RPi

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i am running HA OS.

I had the same problem I was loosing my connection with my raspberry if I was not using it for a while.
I took of the integration for the local adress I had
and desactivate the raspberry power supply integration to
since then it did not stop