Enema,
It's probably best you join the Discord channel so we can help more interactively.
I'd certainly need more of your logs to get more of an idea of the context leading up the text you pasted.
It would help to know if you're running Qora on Windows (32 or 64bit?) or something else.
https://discord.gg/8reZ3Bugs are on Win32.
1st I converted db whith 0.26.6 which gave me error 2nd post.
When sync from scratch bug from 2nd post is resolved but then I end up with error from 1st post.