https://pastebin.com/GM6Pwwez

My guess is that it is related to a mod that adds milk as a form of liquid.

Looks like I reported this before, and forgot.

LunarLuned/Peculia#4

Doing some investigating on the error...

Create, Pehkui, Porting Lib, and Lithium all seem to use the same mixins that is being blamed.

This is also happening on Quilt, of note.

This doesn't seem to be related to this mod

Milk issue was fixed, but other mods seem to be having fluid issues with your mixins, so anything else to deal with fluids should go to this issue:

#89