When launching the game with the new Rats 1.20-8.1, I get a crash.

Here's the link to the mclo.gs log

Log error is ...

Error during pre-loading phase
net.minecraftforge.fml.ModLoadingException: Mod totw_modded only supports rats 8.0.6 or above
Currently, rats is 1.20.1-8.1

This mod isn't totw_modded. This is totw_additions.

My bad, bad Google result indeed.