Mod file version
connectivity-1.18-2.5.jar

Describe the bug
netty.io packet exception

To Reproduce
Steps to reproduce the behavior:
Have a big modpack on 1.18.1
Want players to join LAN or SMP
Players booted due to packet exception

Expected behavior
Other players can join LAN or SMP server

Screenshots
shrug

Hmm, now it's io.netty.handler.codec.EncoderException: io.netty.util.IllegalReferenceCountException: refCnt: 0 so I don't think this mod is responsible after all. My bad.