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MC-99877

java.lang.IllegalArgumentException: Duplicate id value for 20!

Resolved

Invalid

0

when i connect-me to my serv, bug ! the message of my client is "connection lost" and on my serv console the error "java.lang.IllegalArgumentException: Duplicate id value for 20!" appairs, please help me, anybody have the same bug !
I think this is a mod id error, but i don't know how to repair this

Attachments

fml-server-latest.log

Comments 1

user-f2760 2016-03-21T19:02:34Z

This tracker is for non modded versions only

Reporter: Clément

Assignee: (Unassigned)

Created: 2016-03-21T18:15:23Z

Updated: 2025-03-17T16:05:24Z

Resolved: 2016-03-21T19:02:34Z

ADO:

Confirmation Status: Unconfirmed

Area:

Mojang Priority:

Category:

Labels:

Affects Versions: Minecraft 1.9

Fix Versions:

Retrieved 2025-06-11T13:02:50Z