Failed to start ix-etc.service - Generate TrueNAS /etc files

After upgrade to 25.10.2 from 25.10.1, my TrueNAS machine cannot start and it pops out the following errors:

Even worse, it cannot boot up from 25.10.1 either with the following errors:

I have a config backup of 25.10.1. How can I recover from it?

It turned out that it can actually boot up after time out. I am still investigating any errors.

So far, besides the SMB service required manual start, everything seems working fine

Any pointer on how to fix that?

It seems 25.10.2.1 has fixed it.