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Note:
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Minecraft and Mod version 🐞
Minecraft: 1.21
Neoforged: 21.0.167
EasyNpc: easy_npc-neoforge-1.21-5.5.10.jar

Describe the bug 🐞
When a second player on a server tries to trade with the same npc, their client loses connect with the following error message Internal Exception: io.netty.handler.codec.EncoderException: Failed to encode packet 'clientbound/minecraft:system_chat'

To Reproduce ⚙️
Steps to reproduce the behavior:

1. open a world with user 1
2. create a humanoid npc and setup a random trade
3. user 1 right clicks the npc to trade
4. open and join the world as user 2
5. user 2 right click the humanoid while user 1 is still interacting with the npc

Result: user 2 loses connection

Expected behavior ✔️
User 2 should be able to trade with npc while user 1 is trading. Either that or user 2 should get a message saying another player is trade with that villager.

Screenshots 📸
If applicable, add screenshots to help explain your problem.

Debugging 🛠️
Before reporting an issue, please enable the debug mode over /easy_npc debug true to get more
detailed information about the issue in the logs.
Additionally, check if there is anything relevant in the crash-reports, debug.log, and latest.log
file.
debug.log
latest.log

Is the issue happening in combination with other mods? (If yes, please provide a full list) 🧩

Nope. I've tested with just easyNpc on it's own

Additional context 📝
Add any other context about the problem here.