ChunkPregenerator Crashing

Question

ChunkPregenerator Crashing

iainvm opened this issue 3 years ago · 23 comments

iainvm commented 3 years ago

Modpack Version

0.5.20

Describe your issue.

Steps that caused the issue:

Created TerraForge world
Ran command /pregen start gen radius test SQUARE ~ ~ 50 minecraft:overworld NORMAL_GEN

Stacktrace found in latest.log:

[01:51:21] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.crash.ReportedException: Ticking entity
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:855) ~[?:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:787) ~[?:?]
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:78) ~[?:?]
	at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:642) [?:?]
	at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServer.java:232) [?:?]
	at net.minecraft.server.MinecraftServer$$Lambda$38784/303714713.run(Unknown Source) [?:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]
Caused by: java.lang.NullPointerException: No data is present for column: [-239, 81]
	at net.minecraft.world.chunk.storage.RegionSectionCache.getColumnInfo(SourceFile:634) ~[?:?]
	at net.minecraft.world.chunk.storage.RegionSectionCache.getCachedColumnInfo(SourceFile:627) ~[?:?]
	at net.minecraft.world.chunk.storage.RegionSectionCache.collectWithinChunkColumn(SourceFile:598) ~[?:?]
	at net.minecraft.village.PointOfInterestManager.collectWithinCircle(SourceFile:1117) ~[?:?]
	at net.minecraft.village.PointOfInterestManager.getAllWithinCircle(SourceFile:1097) ~[?:?]
	at net.minecraft.village.PointOfInterestManager.func_234148_d_(SourceFile:1068) ~[?:?]
	at net.minecraft.entity.ai.brain.task.WalkToHouseTask.func_212832_a_(SourceFile:53) ~[?:?]
	at net.minecraft.entity.ai.brain.task.Task.func_220378_b(SourceFile:45) ~[?:?]
	at net.minecraft.entity.ai.brain.task.MultiTask$RunType$1.func_220630_a(SourceFile:522) ~[?:?]
	at net.minecraft.entity.ai.brain.task.MultiTask.func_212831_a_(SourceFile:53) ~[?:?]
	at net.minecraft.entity.ai.brain.task.Task.func_220378_b(SourceFile:49) ~[?:?]
	at net.minecraft.entity.ai.brain.Brain.func_218218_d(SourceFile:506) ~[?:?]
	at net.minecraft.entity.ai.brain.Brain.func_218210_a(SourceFile:465) ~[?:?]
	at net.minecraft.entity.merchant.villager.VillagerEntity.func_70619_bc(VillagerEntity.java:195) ~[?:?]
	at net.minecraft.entity.MobEntity.func_70626_be(MobEntity.java:688) ~[?:?]
	at net.minecraft.entity.LivingEntity.func_70636_d(LivingEntity.java:2411) ~[?:?]
	at net.minecraft.entity.MobEntity.func_70636_d(MobEntity.java:488) ~[?:?]
	at net.minecraft.entity.AgeableEntity.func_70636_d(SourceFile:127) ~[?:?]
	at net.minecraft.entity.LivingEntity.func_70071_h_(LivingEntity.java:2158) ~[?:?]
	at net.minecraft.entity.MobEntity.func_70071_h_(MobEntity.java:300) ~[?:?]
	at net.minecraft.entity.merchant.villager.VillagerEntity.func_70071_h_(VillagerEntity.java:234) ~[?:?]
	at net.minecraft.world.server.ServerWorld.func_217479_a(ServerWorld.java:611) ~[?:?]
	at net.minecraft.world.server.ServerWorld$$Lambda$39854/2078848353.accept(Unknown Source) ~[?:?]
	at net.minecraft.world.World.func_217390_a(MixinWorldRedstone.java:554) ~[?:?]
	at net.minecraft.world.server.ServerWorld.func_72835_b(ServerWorld.java:404) ~[?:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:851) ~[?:?]
	... 6 more

Crash Report

https://pastebin.com/mMB8XaTm

Latest Log

https://pastebin.com/heLJKG84

Have you modified the modpack?

No

User Modifications

No response

Did the issue happen in singleplayer or on a server?

Singleplayer

Speiger · Answer 1 · 2021-11-16T16:00:17.000Z

This is a first time thing... Im looking into this now... Give me a bit to see what exactly it does.
(Note that the feature that was causing this was present day 1 and its the first time this happened)

Speiger · Answer 2 · 2021-11-16T16:30:47.000Z

Ok I read through the code. And I have to say this is weird because the "crashing" code does not exist.

The function that crashes is this:

at net.minecraft.world.chunk.storage.RegionSectionCache.mde13977$lambda$getWithinChunkColumn$0$0(SourceFile:592) ~[?:?]

But this function does not exist. Neither with Forge mappings (the ones I have don't have a name for that function) or Mojang mappings. Also the class the function is called from is half the size of what the error says...

And the function Minecraft does call works like a charm. Just to show the function that Vanilla actually calls.

   protected Optional<R> getOrLoad(long p_219113_1_) {
      SectionPos sectionpos = SectionPos.of(p_219113_1_);
      if (this.outsideStoredRange(sectionpos)) {
         return Optional.empty();
      } else {
         Optional<R> optional = this.get(p_219113_1_);
         if (optional != null) {
            return optional;
         } else {
            this.readColumn(sectionpos.chunk());
            optional = this.get(p_219113_1_);
            if (optional == null) {
               throw (IllegalStateException)Util.pauseInIde(new IllegalStateException());
            } else {
               return optional;
            }
         }
      }
   }

This function NEVER EVER returns null or throw a NullPointException.
readColumn is also so written that it if it can not find the file it will create a empty PointOfInterestData, because that is a real case scenario.

Ok what does chunkpregen actually do with POIs.

Basically ChunkPregen is saving Pois if they get to large and the forcefully unload them.
Why? Because they are a memory leak. They never unload on their own.
If you don't do that you can not have a large in minecraft anymore. The hardcap of the world would be: 16k x 16k to 32k x 32k (Blocks)
After that you would run out of memory if you had 7-8GB free of ram when the world was first created.
Maybe even less. Its a long time since I tested the hardcap.

But ChunkPregen always saves first before removing the reference only, after the Game already has finished its update logic. The IOWorker still has the data and if it is requested then it will load it up as needed from the IOWorker or from the SaveFile itself. Otherwise if it fails to do so it will create a empty one.
So there is a no crash scenario.

And since the code being called does not even exist with Vanilla Mappings, yet the Bee function does exist does mean it is code that was added by another mod and ChunkPregen is still until 1.18 completely asm/mixin free

So this is a incompatibly caused by a third party. Until it's proven otherwise I will treat it as not Chunkpregens bug.
For the sole reason: First time happening after 1 year of working without any problems. And Vanilla AI was working fine with that.

Darkere · Answer 3 · 2021-11-16T16:39:14.000Z

The crash you were looking at was presumably caused by deleting the pregen cache. I'm not sure what exactly that does, but I could imagine that causing problems.

The original crash mentions mixins from roadrunner.

java.lang.NullPointerException: No data is present for column: [-239, 81]
	at net.minecraft.world.chunk.storage.RegionSectionCache.getColumnInfo(SourceFile:634) ~[?:?] {re:mixin,re:classloading,pl:mixin:APP:roadrunner.mixins.json:ai.poi.fast_retrieval.SerializingRegionBasedStorageMixin,pl:mixin:A

So that is likely the reason for the non existant code. Maybe @MaxNeedsSnacks could take a look when he has time.

Speiger · Answer 4 · 2021-11-16T16:47:17.000Z

@Darkere eh nope Since i remove the "reference" it will trigger a reload from the IOWorker when data is requested and as @MaxNeedsSnacks already pointed out this is most likely a crash from a different mod.

Also please stop using "but you do stuff and that's causing the issue" argument when i clearly stated this worked fine for 1 year without issues so someone else is the cause... That's just lazy.

Also the function "getColumnInfo" you mean does not exist in Minecrafts original sourcecode.

MaxNeedsSnacks · Answer 5 · 2021-11-16T16:44:03.000Z

See MaxNeedsSnacks/roadrunner#21; since neither of the original posters have replied whether this works for them though, please try and see whether the prerelease (available on GH) fixes this, I'll do another full release then

Speiger · Answer 6 · 2021-11-16T17:06:02.000Z

@MaxNeedsSnacks yeah this "should" fix it. Though we kinda have a collision of interest with our mods that we kinda need to sort out... This is just the "obvious crash" collision, but not the "bigger bug" that we do add if you fix this "crash" right now...

iainvm · Answer 7 · 2021-11-16T17:22:05.000Z

@MaxNeedsSnacks Sadly with your build artifact I've hit the NullPointerException. So might have fixed the POI issue, but now I'm back to the original StackTrace.

[17:16:15] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.crash.ReportedException: Ticking entity
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:855) ~[?:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:787) ~[?:?]
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:78) ~[?:?]
	at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:642) [?:?]
	at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServer.java:232) [?:?]
	at net.minecraft.server.MinecraftServer$$Lambda$38780/788668991.run(Unknown Source) [?:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]
Caused by: java.lang.NullPointerException: No data is present for column: [-239, -77]
	at net.minecraft.world.chunk.storage.RegionSectionCache.getColumnInfo(SourceFile:637) ~[?:?]
	at net.minecraft.world.chunk.storage.RegionSectionCache.getCachedColumnInfo(SourceFile:630) ~[?:?]
	at net.minecraft.world.chunk.storage.RegionSectionCache.getWithinChunkColumn(SourceFile:584) ~[?:?]
	at net.minecraft.village.PointOfInterestManager.func_219137_a(SourceFile:1039) ~[?:?]
	at net.minecraft.village.PointOfInterestManager.func_226350_a_(SourceFile:71) ~[?:?]
	at net.minecraft.village.PointOfInterestManager$$Lambda$39850/958551535.apply(Unknown Source) ~[?:?]
	at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:267) ~[?:1.8.0_51]
	at net.minecraft.util.math.ChunkPos$1.tryAdvance(SourceFile:168) ~[?:?]
	at java.util.Spliterator.forEachRemaining(Spliterator.java:326) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) ~[?:1.8.0_51]
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_51]
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[?:1.8.0_51]
	at net.minecraft.entity.passive.BeeEntity$UpdateBeehiveGoal.handler$zpd000$findNearbyHivesWithSpace(BeeEntity.java:1220) ~[?:?]
	at net.minecraft.entity.passive.BeeEntity$UpdateBeehiveGoal.func_226489_j_(BeeEntity.java) ~[?:?]
	at net.minecraft.entity.passive.BeeEntity$UpdateBeehiveGoal.func_75249_e(BeeEntity.java:1101) ~[?:?]
	at net.minecraft.entity.ai.goal.PrioritizedGoal.func_75249_e(SourceFile:41) ~[?:?]
	at net.minecraft.entity.ai.goal.GoalSelector.startGoals(SourceFile:636) ~[?:?]
	at net.minecraft.entity.ai.goal.GoalSelector.updateGoalStates(SourceFile:573) ~[?:?]
	at net.minecraft.entity.ai.goal.GoalSelector.func_75774_a(SourceFile:555) ~[?:?]
	at net.minecraft.entity.MobEntity.func_70626_be(MobEntity.java:682) ~[?:?]
	at net.minecraft.entity.LivingEntity.func_70636_d(LivingEntity.java:2411) ~[?:?]
	at net.minecraft.entity.MobEntity.func_70636_d(MobEntity.java:488) ~[?:?]
	at net.minecraft.entity.AgeableEntity.func_70636_d(SourceFile:127) ~[?:?]
	at net.minecraft.entity.passive.AnimalEntity.func_70636_d(AnimalEntity.java:51) ~[?:?]
	at net.minecraft.entity.passive.BeeEntity.func_70636_d(BeeEntity.java:401) ~[?:?]
	at com.resourcefulbees.resourcefulbees.entity.passive.CustomBeeEntity.func_70636_d(CustomBeeEntity.java:166) ~[?:1.16.5-0.9.9.8]
	at net.minecraft.entity.LivingEntity.func_70071_h_(LivingEntity.java:2158) ~[?:?]
	at net.minecraft.entity.MobEntity.func_70071_h_(MobEntity.java:300) ~[?:?]
	at net.minecraft.entity.passive.BeeEntity.func_70071_h_(BeeEntity.java:218) ~[?:?]
	at com.resourcefulbees.resourcefulbees.entity.passive.ResourcefulBee.func_70071_h_(ResourcefulBee.java:122) ~[?:1.16.5-0.9.9.8]
	at net.minecraft.world.server.ServerWorld.func_217479_a(ServerWorld.java:611) ~[?:?]
	at net.minecraft.world.server.ServerWorld$$Lambda$39829/593661180.accept(Unknown Source) ~[?:?]
	at net.minecraft.world.World.func_217390_a(MixinWorldRedstone.java:554) ~[?:?]
	at net.minecraft.world.server.ServerWorld.func_72835_b(ServerWorld.java:404) ~[?:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:851) ~[?:?]
	... 6 more

This Exceptions did NOT arise after I removed the pregen cache, I removed the pregen cache to stop the pregen from automatically continuing and hitting this Exception over and over.

Crash Report: https://pastebin.com/8xM9aJxN
Latest Log: https://pastebin.com/5BBNzS7J

Pastebin
---- Minecraft Crash Report ----// Who set us up the TNT?Time: 11/16/21 5: - Pastebin.com
Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

Pastebin
[17:11:45] [Render thread/INFO]: Starting JEI took 1.003 min[17:11:45] [Render - Pastebin.com
Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

Speiger · Answer 8 · 2021-11-16T17:23:15.000Z

@iainvm the Pregen cache is just the "TaskCache" and the "Memory" of what the pregenerator was doing. Deleting it does NOTHING to the pregeneration itself...

Speiger · Answer 9 · 2021-11-16T17:29:00.000Z

To temp fix this: Remove the Roadrunner mod temporarily during Pregeneration. After that is done install the Roadrunner mod back in and just don't run any pregeneration with it. That will fix your issue.

Until @MaxNeedsSnacks, maybe even jellysquid3 and I have solved that problem...
Because this will also be a Fabric Problem if ChunkPregen decides to move to fabric at any point.

iainvm · Answer 10 · 2021-11-16T17:30:11.000Z

@Speiger Yeah, was just confirming that since @Darkere wondered if deleting the cache caused a problem. So was just clarifying that I deleted the cache to stop the task itself. Since there's no way to stop/pause a pregen task before getting back into a world (to my knowledge).

I'll try your suggestion to temp disabling of Roadrunner and see if that bypasses the issue.

Speiger · Answer 11 · 2021-11-16T17:31:04.000Z

@iainvm there is a config with "autorestart" that you can set to false that would stop a task from starting if you join a world.

iainvm · Answer 12 · 2021-11-16T17:32:29.000Z

@iainvm there is a config with "autorestart" that you can set to false that would stop a task from starting if you join a world.

Ahh perfect, thanks. I feel bad that I didn't even check for a config. I just yeet'd the cache. :') The 3am "hit it with a hammer" solution at the time.

Speiger · Answer 13 · 2021-11-16T17:34:54.000Z

@MaxNeedsSnacks also this issue comes because I replace the "Long2ObjectMap" when a pregeneration starts...
I can fix this and not replace it if Lithium is detected that would fix the entire issue but that would require a small code change on your part because there is a reason i do that.

iainvm · Answer 14 · 2021-11-16T18:15:14.000Z

Pregen went longer than it had been, but decided to do a move focused pregen, so /pregen stop test
And got a Exception mentioning the Long2ObjectMap this might be out of scope of this bug report, though thought since you're chatting about the Long2ObjectMap then worth saying here.

Stopped the pregen, Opened JourneyMap to generate missing chunks. Crashed

[18:09:53] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.crash.ReportedException: Ticking entity
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:855) ~[?:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:787) ~[?:?]
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:78) ~[?:?]
	at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:642) [?:?]
	at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServer.java:232) [?:?]
	at net.minecraft.server.MinecraftServer$$Lambda$38782/1553537625.run(Unknown Source) [?:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
	at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap.moveIndexToLast(Long2ObjectLinkedOpenHashMap.java:497) ~[fastutil-8.2.1.jar:?]
	at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap.getAndMoveToLast(Long2ObjectLinkedOpenHashMap.java:572) ~[fastutil-8.2.1.jar:?]
	at pregenerator.common.utils.collections.Long2ObjectCustomMap.get(Long2ObjectCustomMap.java:25) ~[?:V1.16-3.2.0]
	at net.minecraft.world.chunk.storage.RegionSectionCache.func_219106_c(SourceFile:67) ~[?:?]
	at net.minecraft.world.chunk.storage.RegionSectionCache.func_219113_d(SourceFile:75) ~[?:?]
	at net.minecraft.village.PointOfInterestManager.func_219149_a_(SourceFile:87) ~[?:?]
	at net.minecraft.village.PointOfInterestManager$$Lambda$39884/715049533.apply(Unknown Source) ~[?:?]
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_51]
	at java.util.stream.IntPipeline$4$1.accept(IntPipeline.java:250) ~[?:1.8.0_51]
	at java.util.stream.Streams$RangeIntSpliterator.forEachRemaining(Streams.java:110) ~[?:1.8.0_51]
	at java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:693) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) ~[?:1.8.0_51]
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[?:1.8.0_51]
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_51]
	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[?:1.8.0_51]
	at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:270) ~[?:1.8.0_51]
	at net.minecraft.util.math.ChunkPos$1.tryAdvance(SourceFile:168) ~[?:?]
	at java.util.Spliterator.forEachRemaining(Spliterator.java:326) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) ~[?:1.8.0_51]
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_51]
	at java.util.stream.ReferencePipeline.reduce(ReferencePipeline.java:479) ~[?:1.8.0_51]
	at java.util.stream.ReferencePipeline.min(ReferencePipeline.java:520) ~[?:1.8.0_51]
	at net.minecraft.village.PointOfInterestManager.func_234148_d_(SourceFile:110) ~[?:?]
	at net.minecraft.entity.ai.brain.task.WalkToHouseTask.func_212832_a_(SourceFile:53) ~[?:?]
	at net.minecraft.entity.ai.brain.task.Task.func_220378_b(SourceFile:45) ~[?:?]
	at net.minecraft.entity.ai.brain.task.MultiTask$RunType$1.func_220633_a(SourceFile:96) ~[?:?]
	at net.minecraft.entity.ai.brain.task.MultiTask$RunType$1$$Lambda$40115/1189703810.test(Unknown Source) ~[?:?]
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174) ~[?:1.8.0_51]
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[?:1.8.0_51]
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[?:1.8.0_51]
	at java.util.ArrayList$ArrayListSpliterator.tryAdvance(ArrayList.java:1351) ~[?:1.8.0_51]
	at java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:126) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:529) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:516) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) ~[?:1.8.0_51]
	at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:152) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_51]
	at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:464) ~[?:1.8.0_51]
	at net.minecraft.entity.ai.brain.task.MultiTask$RunType$1.func_220630_a(SourceFile:97) ~[?:?]
	at net.minecraft.entity.ai.brain.task.MultiTask.func_212831_a_(SourceFile:53) ~[?:?]
	at net.minecraft.entity.ai.brain.task.Task.func_220378_b(SourceFile:49) ~[?:?]
	at net.minecraft.entity.ai.brain.Brain.func_218218_d(SourceFile:506) ~[?:?]
	at net.minecraft.entity.ai.brain.Brain.func_218210_a(SourceFile:465) ~[?:?]
	at net.minecraft.entity.merchant.villager.VillagerEntity.func_70619_bc(VillagerEntity.java:195) ~[?:?]
	at net.minecraft.entity.MobEntity.func_70626_be(MobEntity.java:688) ~[?:?]
	at net.minecraft.entity.LivingEntity.func_70636_d(LivingEntity.java:2411) ~[?:?]
	at net.minecraft.entity.MobEntity.func_70636_d(MobEntity.java:488) ~[?:?]
	at net.minecraft.entity.AgeableEntity.func_70636_d(SourceFile:127) ~[?:?]
	at net.minecraft.entity.LivingEntity.func_70071_h_(LivingEntity.java:2158) ~[?:?]
	at net.minecraft.entity.MobEntity.func_70071_h_(MobEntity.java:300) ~[?:?]
	at net.minecraft.entity.merchant.villager.VillagerEntity.func_70071_h_(VillagerEntity.java:234) ~[?:?]
	at net.minecraft.world.server.ServerWorld.func_217479_a(ServerWorld.java:611) ~[?:?]
	at net.minecraft.world.server.ServerWorld$$Lambda$39833/1032488667.accept(Unknown Source) ~[?:?]
	at net.minecraft.world.World.func_217390_a(MixinWorldRedstone.java:554) ~[?:?]
	at net.minecraft.world.server.ServerWorld.func_72835_b(ServerWorld.java:404) ~[?:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:851) ~[?:?]
	... 6 more

Crash Report: https://pastebin.com/pzB8vMpm
Latest Log: https://pastebin.com/kDJBgcUN

Speiger · Answer 15 · 2021-11-16T18:38:16.000Z

This looks like a Multithreading issue...
Where 2 threads trying to access the same thing.
Never ran into that crash before to be honest. But the fix to this would be synchronizing it... Only 1 thread can access it at the same time.
The fix to that right now is just reloading the singleplayer world after a pregeneration. Which is suggested already anyways.

Speiger · Answer 16 · 2021-11-17T04:53:33.000Z

Small Update on status for @NillerMedDild.

I am going to make a patch next weekend that should be released fairly quickly.
It will address the issue and I will just hope that Lithium will patch its side quickly too.
If not worst case: Pregen will fight vanilla for keeping stuff loaded that shouldn't but that isn't to much of a issue.
It will also fix lithiums Memory leak that comes with mc during pregeneration.

NielsPilgaard · Answer 17 · 2021-11-17T10:04:57.000Z

Excellent, thank you :)

iainvm · Answer 18 · 2021-11-17T14:52:42.000Z

Also to note the work around of disabling Roadrunner has worked well and haven't had any of these issues anymore, just eventual slowdowns because of increasing memory usage.

iainvm · Answer 19 · 2021-11-16T02:00:07.000Z

Just to note, every time I load up this world, the pregen tries to continue and throws this exception again.

iainvm · Answer 20 · 2021-11-16T02:04:53.000Z

Also created a bug on the ChunkPregenerator tracker
https://www.curseforge.com/minecraft/mc-mods/chunkpregenerator/issues/156

iainvm · Answer 21 · 2021-11-16T02:50:55.000Z

The region mentioned in the stack trace was near where I was standing, so I deleted the pregen cache info and moved far away (outside of the region I want to pregen). Ran the command again and now I'm getting this stacktrace

[02:45:18] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.crash.ReportedException: Ticking entity
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:855) ~[?:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:787) ~[?:?]
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:78) ~[?:?]
	at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:642) [?:?]
	at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServer.java:232) [?:?]
	at net.minecraft.server.MinecraftServer$$Lambda$38795/510002824.run(Unknown Source) [?:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]
Caused by: java.lang.NullPointerException
	at net.minecraft.world.chunk.storage.RegionSectionCache.mde13977$lambda$getWithinChunkColumn$0$0(SourceFile:592) ~[?:?]
	at net.minecraft.world.chunk.storage.RegionSectionCache$$Lambda$39882/1651830478.apply(Unknown Source) ~[?:?]
	at java.util.stream.IntPipeline$4$1.accept(IntPipeline.java:250) ~[?:1.8.0_51]
	at java.util.PrimitiveIterator$OfInt.forEachRemaining(PrimitiveIterator.java:115) ~[?:1.8.0_51]
	at java.util.Spliterators$IntIteratorSpliterator.forEachRemaining(Spliterators.java:1908) ~[?:1.8.0_51]
	at java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:693) ~[?: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.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[?:1.8.0_51]
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_51]
	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418) ~[?:1.8.0_51]
	at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:270) ~[?:1.8.0_51]
	at net.minecraft.util.math.ChunkPos$1.tryAdvance(SourceFile:168) ~[?:?]
	at java.util.Spliterator.forEachRemaining(Spliterator.java:326) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502) ~[?:1.8.0_51]
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[?:1.8.0_51]
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:1.8.0_51]
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[?:1.8.0_51]
	at net.minecraft.entity.passive.BeeEntity$UpdateBeehiveGoal.handler$zpd000$findNearbyHivesWithSpace(BeeEntity.java:1220) ~[?:?]
	at net.minecraft.entity.passive.BeeEntity$UpdateBeehiveGoal.func_226489_j_(BeeEntity.java) ~[?:?]
	at net.minecraft.entity.passive.BeeEntity$UpdateBeehiveGoal.func_75249_e(BeeEntity.java:1101) ~[?:?]
	at net.minecraft.entity.ai.goal.PrioritizedGoal.func_75249_e(SourceFile:41) ~[?:?]
	at net.minecraft.entity.ai.goal.GoalSelector.startGoals(SourceFile:636) ~[?:?]
	at net.minecraft.entity.ai.goal.GoalSelector.updateGoalStates(SourceFile:573) ~[?:?]
	at net.minecraft.entity.ai.goal.GoalSelector.func_75774_a(SourceFile:555) ~[?:?]
	at net.minecraft.entity.MobEntity.func_70626_be(MobEntity.java:682) ~[?:?]
	at net.minecraft.entity.LivingEntity.func_70636_d(LivingEntity.java:2411) ~[?:?]
	at net.minecraft.entity.MobEntity.func_70636_d(MobEntity.java:488) ~[?:?]
	at net.minecraft.entity.AgeableEntity.func_70636_d(SourceFile:127) ~[?:?]
	at net.minecraft.entity.passive.AnimalEntity.func_70636_d(AnimalEntity.java:51) ~[?:?]
	at net.minecraft.entity.passive.BeeEntity.func_70636_d(BeeEntity.java:401) ~[?:?]
	at com.resourcefulbees.resourcefulbees.entity.passive.CustomBeeEntity.func_70636_d(CustomBeeEntity.java:166) ~[?:1.16.5-0.9.9.8]
	at net.minecraft.entity.LivingEntity.func_70071_h_(LivingEntity.java:2158) ~[?:?]
	at net.minecraft.entity.MobEntity.func_70071_h_(MobEntity.java:300) ~[?:?]
	at net.minecraft.entity.passive.BeeEntity.func_70071_h_(BeeEntity.java:218) ~[?:?]
	at com.resourcefulbees.resourcefulbees.entity.passive.ResourcefulBee.func_70071_h_(ResourcefulBee.java:122) ~[?:1.16.5-0.9.9.8]
	at net.minecraft.world.server.ServerWorld.func_217479_a(ServerWorld.java:611) ~[?:?]
	at net.minecraft.world.server.ServerWorld$$Lambda$39850/235804421.accept(Unknown Source) ~[?:?]
	at net.minecraft.world.World.func_217390_a(MixinWorldRedstone.java:554) ~[?:?]
	at net.minecraft.world.server.ServerWorld.func_72835_b(ServerWorld.java:404) ~[?:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:851) ~[?:?]
	... 6 more

Crash Report: https://pastebin.com/3mecVNp5
Latest Log: https://pastebin.com/naN9s8aY

Pastebin
---- Minecraft Crash Report ----// Hey, that tickles! Hehehe!Time: 11/16/2 - Pastebin.com
Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

Pastebin
[02:42:35] [Server thread/INFO]: HELLO from server starting[02:42:35] [Serve - Pastebin.com
Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

Speiger · Answer 22 · 2021-11-28T05:50:56.000Z

@NillerMedDild this is not fixed completely because @MaxNeedsSnacks still hasn't really implemented his side of the fix...

Speiger · Answer 23 · 2021-12-14T07:10:46.000Z

@NillerMedDild ok a release was issued and it seems this is now fixed completly from what i noticed (Havent tested the new version though. But the fixes they implemented "should" address the issues)

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