Since the latest update, there has been an issue where anyone joining will get auto kicked with the following message "internal exception: io.netty.handler index 26 out of bounds for length 5".

After a few days of digging, our server found it was an entry under capabilities.dat for Eidolon-Repraised was causing the error. Once you removed the entry for the entire mod under capabilities.dat, then the error went away and people could join again.

File at issue: capabilities.dat
Minecraft Version: 1.20.1
Version: 0.3.8.8b

Can confirm, deleting the times compound from capabilities.dat > data > eidolon:reputation was enough to fix this for us. Probably could use migration logic to fix this for others.

have the same issue, had to downgrade to the old version

managed to reproduce it by plugging in an old world data caps, trying to get what's wrong

might have found the issue & fix, if it's not out tomorrow it will the day after

updates on this? .9 is supposed to be fixing the issue

updates on this? .9 is supposed to be fixing the issue
Tested on the server that was having the kick issue, and this latest update fixed the issue.