Hello

How can we reproduce it?
Steps to reproduce the behavior:

1. Login on 1.8'
2. Teleport to other world
3. Client crash

Expected behaviour
Since I updated viaversion from 1.16.3 to 1.16.4 it crash the client when you try to switch to a other world.

Error
https://pastebin.com/F2Nb6Qqu

ViaVersion Dump
https://dump.viaversion.com/41e8133b53c433a2d622e7f03810ce1b753d7b78cdba70b1783d6712022f11ab

Additional server info
FlameCord

Checklist

• I have included a Viaversion dump
• If applicable, I have included a paste (not a screenshot) of the error
• I have tried a build from https://ci.viaversion.com/ and the issue still persists

Closing as stale

I guess this has something to so with the fix for ProtocolLib we added in ViaVersion. Could you try without ProtocolLib?