In the middle of the debug.log I see lines like:
2021-01-28T02:23:37Z UpdateTip: new best=00000000000000000006ddb5e854505f8b792122b0ac9469c07eb26db414f6fb height=667897 version=0x20006000 log2_work=92.622774 tx=610212544 date='2021-01-27T13:04:14Z' progress=0.999724 cache=439.9MiB(3354911txo)
Followed by bitcoin core initializing itself again:
2021-01-28T02:24:41Z Bitcoin Core version v0.20.1 (release build)
2021-01-28T02:24:41Z Qt 5.9.8 (static), plugin=windows (static)
2021-01-28T02:24:41Z System: Windows 10 (10.0), x86_64-little_endian-llp64
It means Bitcoin Core did not shut down cleanly either. Try to run 0.21.0 again but using -reindex and -rescan together. -rescan will fix your block.dat files in case they are corrupted, while -rescan will update your wallet file with newer transactions in the blockchain that are relevant to it.
You mentioned that this transaction ID is related:
6ce056a8-ae7c-44f3-9bf6-da7ac60c70e2
It's not showing up on block explorers when the dashes are removed.
Does 0.21.0 work if you use a different wallet file (or no wallet file at all)?
Sorry, above Transaction ID was given by Nicehash, maybe just an internal ID.
The correct ID is:
dad0f505c7c9697e1b7b79ecc7133701fd0a4424993ec27770191bfb6a290763
And yes, 0.21.0 it is working fine if I create a new wallet.dat.
It was working for a week or so untill this morning, the issue popup after reciving the first transaction last night to my wallet running Core version 0.21.0
I have also tried this way arround and import my wallet.dat after finished synching with a new wallet, but during inilizing my old wallet the same issue comes back, Bitcoin Core just shutdown without an error message and at same step in debug.log