Train station cause disconnect from server that has the mod disabled

[bepollyst]

Summary

When client that has the mod attempts to connect to the server that does not, when any train station is placed anywhere in the world, player attempting to connect gets an exception:
java.io.EOFException: fieldSize is too long! Length is 21618, but maximum is 97. Numbers are different every time.

Expected behavior

Either of these:

1. The screen that tells that you can't connect to the server as it does not the mod enabled.
2. Mod works okay on the server that does not have mod enabled.

Details

• The exception causes multiplayer connection to abort, without crashing the game.
• If the player is already connected to the world, placing a train station causes him to disconnect with the exception.

Logs

https://mclo.gs/guYpr1A

Versions

Forge: 47.4.0
Minecraft: 1.20.1
MCP: 20230612.114.412
Create: 6.0.6 from 12.06.2025
Create PL: 2.0.3 from 20.05.2025