not a log, but an anonymized (or description of the) list of accounts on your device davx / AM acts upon by accountType.
AM is iterating through a list of accounts to sync and ends up raising the “UnauthorizedException” on an entry that apparently has no userName in its credentials. My guess is it’s an incomplete migration artifact / bug - or AM acting on an accountType it shouldn’t act on.
how to obtain? see the bottom of this post