Is there an existing issue for this?

• I have searched the existing issues

Observed behaviour

Connecting to server and getting "A fatal error has occurred, this connection is terminated"

Expected behaviour

To be able to join the server.

Steps to reproduce

1. Join Server

Crashlog

https://gist.github.com/xIGBClutchIx/37985521308076b625465aaf4aa0bef2

Environment (Singleplayer/Server, etc.)

LAN game/Server

Mod version

4.3.6

Minecraft version

1.12.2

Forge version

1.12.2 - 14.23.5.2860

Other mods

https://gist.github.com/xIGBClutchIx/d8a024ba150e166b45110bd06f908ffa

Are you sure the client is using the same configs and mod versions? A mismatch in configs or mod versions can cause this.

Are you sure the client is using the same configs and mod versions? A mismatch in configs or mod versions can cause this.

Yeah I thought that too but I downloaded all the files from the server exactly and made a new MultiMC instance.

Fixed by 3155aa6
Use v4.3.7