I'm not making a mod but a modpack and I cannot find anywhere for any kind of support on the issue I am having, I have started working on a modpack and I got to the stage of trying to test it just to see if it was playable at all (modpack in question https://www.curseforge.com/minecraft/modpacks/funkycraft/files)
I am able to run the modded version of the game and make a world but around the 5 minute mark of running the world the game crashes and I get an crash message that looks like this;
The game crashed whilst exception ticking world Error: java.util.ConcurrentModificationException: null Exit Code: -1
I get this everytime without fail and I have no idea what is causing it at all, and when I open the crash report this is what I get too;
-- Head --
Thread: Server thread
Stacktrace:
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1380) ~[?:1.8.0_51] {}
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) ~[?:1.8.0_51] {}
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) ~[?:1.8.0_51] {}
at java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:312) ~[?:1.8.0_51] {}
at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:743) ~[?:1.8.0_51] {}
at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580) ~[?:1.8.0_51] {}
at net.minecraft.world.IServerWorld.func_242417_l(SourceFile:11) ~[?:?] {re:computing_frames,re:mixin,re:classloading}
at net.minecraft.world.spawner.WorldEntitySpawner.func_234966_a_(WorldEntitySpawner.java:178) ~[?:?] {re:classloading}
at net.minecraft.world.spawner.WorldEntitySpawner.func_234967_a_(WorldEntitySpawner.java:124) ~[?:?] {re:classloading}
at net.minecraft.world.spawner.WorldEntitySpawner.func_234979_a_(WorldEntitySpawner.java:110) ~[?:?] {re:classloading}
at net.minecraft.world.server.ServerChunkProvider.func_241099_a_(ServerChunkProvider.java:364) ~[?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterweather.mixins.json:access.ServerChunkProviderAccess,pl:mixin:A}
at net.minecraft.world.server.ServerChunkProvider$$Lambda$45518/826919408.accept(Unknown Source) ~[?:?] {}
at java.util.ArrayList.forEach(ArrayList.java:1249) ~[?:1.8.0_51] {}
at net.minecraft.world.server.ServerChunkProvider.func_217220_m(ServerChunkProvider.java:351) ~[?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterweather.mixins.json:access.ServerChunkProviderAccess,pl:mixin:A}
at net.minecraft.world.server.ServerChunkProvider.func_217207_a(ServerChunkProvider.java:326) ~[?:?] {re:mixin,pl:accesstransformer:B,re:classloading,pl:accesstransformer:B,pl:mixin:APP:betterweather.mixins.json:access.ServerChunkProviderAccess,pl:mixin:A}
at net.minecraft.world.server.ServerWorld.func_72835_b(ServerWorld.java:333) ~[?:?] {re:mixin,pl:accesstransformer:B,xf:fml:forgeendertech:coremod,re:classloading,pl:accesstransformer:B,xf:fml:forgeendertech:coremod,pl:mixin:APP:betternether.mixins.json:ServerWorldMixin,pl:mixin:APP:cavesandcliffs.mixins.json:common.world.gen.ServerWorldMixin,pl:mixin:APP:betterweather.mixins.json:access.ServerWorldAccess,pl:mixin:APP:betterweather.mixins.json:server.world.MixinServerWorld,pl:mixin:APP:bountifulbaubles.mixins.json:MixinServerWorld,pl:mixin:APP:immersiveengineering.mixins.json:coremods.ServerWorldMixin,pl:mixin:APP:abnormals_core.mixins.json:ServerWorldMixin,pl:mixin:APP:quark.mixins.json:ServerWorldMixin,pl:mixin:A}
I have no idea what is going on and any help would be great! I don't know what is causing this and how to fix it I am at a dead end!