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JJK Index Fix

JJK Index Fix

MOD
Fixes the JujutsuCraft / Sorcery Fight 'Index 23 out of bounds' error which occurs when joining a congested multiplayer server.
by Joespeph
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3,437 downloads
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Updated Oct 14, 2026
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Bug Fixes
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- Usage -

Add the mod to your server's mod list and you're done!

- Description -
Fixes the JujutsuCraft / SorceryFight 'Index 23 out of bounds' error which occurs when joining a server in which players are currently utilising moves/attacks. This mod fixes these issues with the use of mixin injects and replacements.

- What this mod does / how it will effect your experience -

An 'index out of bounds' error occurs when trying to access an element in an array / list / other through an index that does not exist, thus triggering an exception.

This mod fixes the index issue with the use of mixins in order to solve the issue by removing the problematic code.
This fix will allow you to finally log into servers when other users are currently fighting / using moves.


- How to replicate the bug -
1. Boot up Minecraft with Jujutsucraft / Sorcery Fight installed

2. Attempt to join a server in whcih others are using moves / attacks

You will be greeted with an error saying 'Index 23 out of bounds'. This occurs due to code in the latest Jujutsucraft / Sorcery fight sending a packet at a time and in such a way that the client cannot handle process correctly.

jjk_fix-1.0.0.jar
MC Client, 1.20.1, Forge, Server
Release 2025-04-24 Get

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