Minecraft Version

1.20.1
(Edited: issue template does not allow choosing 1.20.1 as Minecraft version)

Describe the Bug

The game crashes when loading a world that contains a powered (>= 30 RPM, i.e. fast enough to perform mixing) above a non-empty basin.

Reproduction Steps

1. Setup a basin + mixer spinning at >= 30 RPM
2. Insert either an item or a fluid into the basin
3. Leave the world
4. Open the world

Expected Result

The game doesn't crash

Screenshots and Videos

No response

Crash Report or Log

https://pastebin.com/jkSD4hfX

Other Mods

Create 0.5.1.f
Farmer's Delight 1.2.3

Mod Version

1.3.9.b

Forge Version

47.2.0

Same happens when running a server.

https://pastebin.com/wWxp6dr6

For some reason, when ported back to singleplayer the world does load and the mixer works fine.