My NUC is a no brand AMD, not Intel.
I spent weeks trying to work out why this was happening. I even set up a second HA instance that takes over when the first fails.
I cant remember how worked it out in the end.
BTW, if this turns out to be the solution, I suggest creating a new post with the heading “If your are using a NUC to run HA and it starts to crash intermittently, try this”. I looks like this is more common than I thought. Particularly if it impact Intel products.