Minecraft version

1.19.2

LibX version

1.19.2-4.2.8

Skyblock Builder version

1.19.2-4.2.10

Forge version

43.2.21

The latest.log file

https://gist.github.com/DragonMaster14545/5979352a035cc46aee1b3890f1825ece

Issue description

When I join an existing world it works fine. Creating a new world first says datapack invalid, then continues loading and then this:

It seams to have to do with GregTech community edition unoficial modern, I asked in their discord already, they told me its an issue on this mod's end. I should also not that deleting this mod fixes the issue

Steps to reproduce

Its a huge modpack, only using the two mods together has no issue, I am using a datapack to create dimensions as well, maybe that has something to do with it?

Other information

Why I found out its skyblockbuilder

[06Oct2023 17:09:32.992] [Worker-Main6/WARN] [de.melanx.skyblockbuilder.SkyblockBuilder/]: Failed to validate datapack
java.util.concurrent.CompletionException: java.util.ConcurrentModificationException
at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315) ~[?:?]
at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320) [?:?]
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1770) [?:?]
at java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1760) [?:?]
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373) [?:?]
at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182) [?:?]
at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655) [?:?]
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622) [?:?]
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165) [?:?]
Caused by: java.util.ConcurrentModificationException
at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1712) ~[?:?]
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[?:?]
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[?:?]
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921) ~[?:?]
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?]
at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682) ~[?:?]
at com.gregtechceu.gtceu.data.pack.GTDynamicDataPack.m_214146_(GTDynamicDataPack.java:114) ~[gtceu-forge-1.19.2-1.0.13.jar%23768!/:?]
at net.minecraft.server.packs.resources.FallbackResourceManager.m_214159_(FallbackResourceManager.java:173) ~[client-1.19.2-20220805.130853-srg.jar%231009!/:?]
at net.minecraft.server.packs.resources.MultiPackResourceManager.m_214159_(MultiPackResourceManager.java:91) ~[client-1.19.2-20220805.130853-srg.jar%231009!/:?]
at net.minecraft.server.packs.resources.SimpleJsonResourceReloadListener.m_5944_(SimpleJsonResourceReloadListener.java:32) ~[client-1.19.2-20220805.130853-srg.jar%231009!/:?]
at net.minecraft.server.packs.resources.SimpleJsonResourceReloadListener.m_5944_(SimpleJsonResourceReloadListener.java:16) ~[client-1.19.2-20220805.130853-srg.jar%231009!/:?]
at net.minecraft.server.packs.resources.SimplePreparableReloadListener.m_10786_(SimplePreparableReloadListener.java:11) ~[client-1.19.2-20220805.130853-srg.jar%231009!/:?]
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768) ~[?:?]