Customization with Minecraft - Unable to access modded items in-game

Technical Support
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1

System Information

Field Value
Operating System Windows
Product AMP ‘Callisto’ v2.5.1.0 (Mainline)
Virtualization Docker
Application Minecraft
Module MinecraftModule
Running in Container Yes
Current State Ready

Problem Description

Issue

Whenever I attempt to access modded items in-game I get the following error and am disconnected from the server.
Synmar lost connection: Internal Exception: io.netty.handler.codec.DecoderException: Failed to decode packet ‘serverbound/minecraft:set_creative_mode_slot’

Reproduction Steps

  • Added mods on client and server ends
  • start game in creative mode
  • attempt to move any modded items to toolbar
2

Make sure that the server is running the right modloader and that the mods have started correctly

3

replying in hopes of a solution

4

My advice there still stands. If you don’t use the right modloader+version things won’t load right. And if things still aren’t loading right you need to read the log.

5

Same thing happens even in a paper minecraft server with NBT items. I get kicked off the server with the exact same error, it seems to be an issue with anything that edits the creative menu. For example i have a mod installed that allows me to take command blocks out the creative menu, but it kicks me from the server whenever i take it out. using fabric btw

6

It would be an issue with the mods themselves though, nothing related to AMP

7

Oh I see, thanks it worked

8

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