Checked for existing issues

• I have checked for existing issues, and have found none.

Tested latest version

• I have checked that this occurs on the latest version.

GregTech CEu Version

1.5.4

Minecraft Version

1.20.1

Recipe Viewer Installed

JEI

Environment

Dedicated Server

Cross-Mod Interaction

Yes

Other Installed Mods

ALot, see at crash log

Expected Behavior

Not Crash

Actual Behavior

Crash while generate chunks with Chunk-Pregenerator 4.4.4

Steps to Reproduce

• Open server
• Enter server
• Start generate task with chunk-pregenerator (300 radius)
• Quit server
• Wait until crash

Additional Information

crash-2024-12-13_11.54.37-server.txt
latest.log

Description: Exception in server tick loop

java.util.ConcurrentModificationException: null
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1597) ~[?:?] {}
	at java.util.HashMap$KeyIterator.next(HashMap.java:1620) ~[?:?] {}
	at com.gregtechceu.gtceu.integration.map.cache.DimensionCache.toNBT(DimensionCache.java:39) ~[gtceu-1.20.1-1.5.4.jar%23275!/:1.5.4] {re:classloading}
	at com.gregtechceu.gtceu.integration.map.cache.server.ServerCacheSavedData.m_7176_(ServerCacheSavedData.java:55) ~[gtceu-1.20.1-1.5.4.jar%23275!/:1.5.4] {re:classloading}
	at net.minecraft.world.level.saveddata.SavedData.m_77757_(SavedData.java:36) ~[server-1.20.1-20230612.114412-srg.jar%23339!/:?] {re:mixin,re:classloading}

@ThePuzzlemaker @PaxtelR Hello, assuming you can recreate the issue, would either of you be able to test the jar in the build output zip here? I am testing #2565

@krossgg I tried to reproduce the error in the version you mentioned, and apparently it is resolved. I couldn't reproduce the error. So, I believe the issue has been fixed.

Cool, thank you

I experienced this issue with regular chunk generation on a dedicated server.

crash-2024-12-15_00.30.18-server.txt
I can provide more info if needed, I just don't want to have to go through the slog of redacting my entire latest.log/debug.log if it's not necessary.