I think you have some bad blocks on that drive. Try to rescan your blocks to reindex.
Why do you want to activate neutrino on your core node if you are not gonna share that neutrino connection to others? Please read carefully the documentation about neutrino and how to use it.
I did RPC call getblockstats on that block and get error:
bitcoin-cli getblockstats 740198 error code: -1 error message: Can't read undo data from disk
ok, looks that I need to rescan, but not sure what you mean. Should I put 'reindex=1' in config and restart bitcoind?
I think that I understand what that mean to activate neutrino. I will not used it at the moment and probably it is not necessary for my future LN node but I am accepting inbound connection from internet now and would like to see what happen and to help a little ...
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Should I put 'reindex=1' in config and restart bitcoind?
Yes. Be aware that will take time, so be patient and watch the logs
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