Please help me find the cause of frequent crashes!

I’ve been using home assistant for several years and love it.
I was running on a pi3 with an sd card, and recently upgraded to a pi4 with an external usb ssd (powered by the pi). I am using a good power supply. I never had any crashes with my previous set up.

I have installed fresh on the ssd via the installer, then initially restored a previous backup.
this crashed every day and I was unable to see why (although the logs had things in them about my car (I use a hybrid Kia that has a plug in so I can see it on the map) and my zigbee devices.

I figured eventually I should just start from scratch and rebuild it fresh without using backups.
I finished this yesterday by it crashed again overnight.

the logs are here: https://controlc.com/b9f78fac

They are full of errors for my tado home heating system (I have two accounts for this as I have two boilers in different parts of the house- this was never a problem before and I haven’t altered anything ). I’ve tried uninstalling tado and reinstalling the addon…n dice.
Can anyone help me?

thanks in advance!

Please be specific in your definition of “crash”.

Also, after a restart, you have the old log as homeassistant.log.1. Is it the one you posted?
If not, that the interesting one, really.

Thanks

Initially the pi is inaccessible from the network although it still connected to the router. then after a while it is no longer connected to the router either (wired).

the log I posted was the .1 log

Which router do you have? If it’s a Draytek, disable UPNP on it

The router is a tp link deco mesh system . Upnp is enabled

How do you know it’s not the Pi?
Flash Ubuntu or Debian to an SSD then install (sudo apt install) and run sysbench, or stress or fio. If your Pi is bad, you will know it.

How do you know it’s not the power supply?

Thanks for the suggestion, is that totally necessary from what is in the logs?
I was going it would be a simpler issue- the pi was new from last week. I’ve been using a 2.5a supply but have also ordered an official one in the hope it’s that

The logs don’t say much.
You have plenty of errors from Tado. Extremely unlikely to be the culprit, but you can try disabling it.

The specs for the Raspberry Pi4 say to use a 3A supply.

Yes, I’m hoping the new power supply fixes things. I’ll resurrect the thread if not. Fingers crossed