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Issue Description
We cannot connect to an open LAN world.

Modpack version (Do not use "latest")
1.46

Logs

N/A

Screenshots

No screenshots are available, but the errors we get are:

• Internal Server Error
• Disconnected
• The overcomplicated way of saying a "timed out" error

Additional context

The LAN is hosted on a properly-configured Linux computer and we tried to connect from a properly-configured Windows computer

I would guess the Firewall is blocking.
This is a support question, not a bug report, please refer to the Discord channel if necessary :)

Additionally, I really recommend that you use a dedicated server setup, as LAN worlds have issues with quests.