warningJava ErrorsAffects: All versions
How to Fix java.lang.IllegalStateException
Fix IllegalStateException in Minecraft by updating the mod shown in the stack trace to the latest compatible version.
Quick Fix
Check the stack trace for the mod causing it. Update the mod to the latest version.
Error Message
java.lang.IllegalStateExceptionHow to Fix
1
Update the mod identified in the stack trace
2
Remove the mod if no update is available
3
Check for mod load order issues
4
Report the bug to the mod author with the full stack trace
Common Causes
- Mod trying to perform an operation at the wrong time
- Registry event fired after registration closed
- Accessing game state before initialization is complete
- Concurrent modification of game data
Diagnostic Steps
- Open the crash report or server log
- Find the IllegalStateException and read the message
- Identify the mod from the stack trace
- Update or remove the mod
FAQ
What does IllegalStateException mean?
A method was called at an invalid time or in an invalid context. In Minecraft, this usually means a mod tried to do something during the wrong phase of loading.