For some reason my minecraft modded server keeps crashing whenever something spawns in. What I do is reset the chunks inside MCEdit and that seems to fix it for a while but after a while, it happens again. if anyone can help that would be amazing ;)



---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 2020-01-16 16:00:24 PST
Description: Exception in server tick loop

java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextNode(Unknown Source)
at java.util.HashMap$ValueIterator.next(Unknown Source)
at net.minecraft.world.World.addTileEntities(World.java:1949)
at net.minecraft.world.chunk.Chunk.onLoad(Chunk.java:856)
at net.minecraftforge.common.chunkio.ChunkIOProvider.syncCallback(ChunkIOProvider.java:109)
at net.minecraftforge.common.chunkio.ChunkIOExecutor.tick(ChunkIOExecutor.java:150)
at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:728)
at net.minecraft.server.dedicated.DedicatedServer.updateTimeLightAndEntities(DedicatedServer.java:397)
at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:668)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Minecraft Version: 1.12.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_231, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 4663043880 bytes (4447 MB) / 7019167744 bytes (6694 MB) up to 7019167744 bytes (6694 MB)
JVM Flags: 2 total; -Xmx7024M -Xms7024M
IntCache: cache: 0, tcache: 0, allocated: 16, tallocated: 121
FML: MCP 9.42 Powered by Forge 14.23.5.2847 106 mods loaded, 106 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

| State | ID | Version | Source | Signature |
|:------ |:---------------------- |:------------------------ |:-------------------------------------------------- |:---------------------------------------- |
| LCHIJA | minecraft | 1.12.2 | minecraft.jar | None |
| LCHIJA | mcp | 9.42 | minecraft.jar | None |
| LCHIJA | FML | 8.0.99.99 | forge-1.12.2-14.23.5.2847-universal.jar | None |
| LCHIJA | forge | 14.23.5.2847 | forge-1.12.2-14.23.5.2847-universal.jar | None |
| LCHIJA | creativecoredummy | 1.0.0 | minecraft.jar | None |
| LCHIJA | foamfixcore | 7.7.4 | minecraft.jar | None |
| LCHIJA | orbis-lib | 0.2.0 | orbis-lib-1.12.2-0.2.0+build127.jar | db341c083b1b8ce9160a769b569ef6737b3f4cdf |
| LCHIJA | aether | 0.2.6 | aether_ii-1.12.2-0.2.6+build127-universal.jar | db341c083b1b8ce9160a769b569ef6737b3f4cdf |
| LCHIJA | aiimprovements | 0.0.1.3 | AIImprovements-1.12-0.0.1b3.jar | None |
| LCHIJA | forgelin | 1.8.4 | Forgelin-1.8.4.jar | None |
| LCHIJA | alib | 1.0.12 | alib-1.0.12.jar | None |
| LCHIJA | alchemistry | 1.0.36 | alchemistry-1.0.36.jar | None |
| LCHIJA | jei | 4.15.0.291 | jei_1.12.2-4.15.0.291.jar | None |
| LCHIJA | immersiveengineering | 0.12-92 | ImmersiveEngineering-0.12-92.jar | 4cb49fcde3b43048c9889e0a3d083225da926334 |
| LCHIJA | alternatingflux | 0.12.2-2 | alternatingflux-0.12.2-2.jar | None |
| LCHIJA | craftstudioapi | 1.0.0 | CraftStudioAPI-universal-1.0.1.95-mc1.12-alpha.jar | None |
| LCHIJA | harvestcraft | 1.12.2zb | Pam's+HarvestCraft+1.12.2zf.jar | None |
| LCHIJA | animania | 1.7.3 | animania-1.12.2-1.7.3.jar | None |
| LCHIJA | waila | 1.8.26 | Hwyla-1.8.26-B41_1.12.2.jar | None |
| LCHIJA | wumpleutil | 2.12.6 | wumpleutil-1.12.2-2.12.6.jar | 1e57901a90acd4a3a54295b6decff5397be51a31 |
| LCHIJA | foodfunk | 4.9.5 | foodfunk-1.12.2-4.9.5.jar | 1e57901a90acd4a3a54295b6decff5397be51a31 |
| LCHIJA | applecore | 3.2.0 | AppleCore-mc1.12.2-3.2.0.jar | None |
| LCHIJA | aquaculture | 1.6.8 | Aquaculture-1.12.2-1.6.8.jar | None |
| LCHIJA | carrots | 1.0.0b1 | carrotslib-mc1.12.2-1.0.0b1.jar | None |
| LCHIJA | armorunder | 1.0.0 | armorunder-mc1.12.2-1.0.0.jar | None |
| LCHIJA | astikorcarts | 1.12.2-0.1.2.7 | astikorcarts-1.12.2-0.1.2.7.jar | None |
| LCHIJA | athenaeum | 1.12.2-1.17.4 | athenaeum-1.12.2-1.17.4.jar | None |
| LCHIJA | autoreglib | 1.3-32 | AutoRegLib-1.3-32 (1).jar | None |
| LCHIJA | baubles | 1.5.2 | Baubles-1.12-1.5.2.jar | None |
| LCHIJA | bearcore | 1.1 | BearCore+V1.2-1.12.jar | None |
| LCHIJA | betteranimalsplus | 8.0.0 | betteranimalsplus-1.12.2-8.0.0.jar | None |
| LCHIJA | betternether | 0.1.8.5 | betternether-0.1.8.5.jar | None |
| LCHIJA | dynamictrees | 1.12.2-0.9.6 | DynamicTrees-1.12.2-0.9.6.jar | None |
| LCHIJA | patchouli | 1.0-20 | Patchouli-1.0-20.jar | None |
| LCHIJA | bewitchment | 0.21.5 | bewitchment-1.12.2-0.0.21.5.jar | None |
| LCHIJA | bloodmoon | 1.5.3 | Bloodmoon-MC1.12.2-1.5.3.jar | d72e0dd57935b3e9476212aea0c0df352dd76291 |
| LCHIJA | bookshelf | 2.3.590 | Bookshelf-1.12.2-2.3.590.jar | d476d1b22b218a10d845928d1665d45fce301b27 |
| LCHIJA | bottledmilk | 1.0.0 | BottledMilk-1.12-1.1.0.jar | None |
| LCHIJA | kjlib | 1.0.4 | kjlib-1.0.4.jar | None |
| LCHIJA | caveroot | 1.1.1 | caveroot-1.1.1.jar | None |
| LCHIJA | cfb | 1.0 | cfb-1.0.jar | None |
| LCHIJA | champions | 1.12.2-1.0.11.2 | champions-1.12.2-1.0.11.2.jar | 2484ef4d131fdc0dca0647aa21b7b944ddb935a1 |
| LCHIJA | chisel | MC1.12.2-1.0.1.44 | Chisel-MC1.12.2-1.0.1.44.jar | None |
| LCHIJA | combatrefined | 1.4.1 | combatrefined-1.4.1.jar | None |
| LCHIJA | toughasnails | 3.1.0.139 | ToughAsNails-1.12.2-3.1.0.139-universal.jar | None |
| LCHIJA | comforts | 1.4.1.2 | comforts-1.12.2-1.4.1.2.jar | 5d5b8aee896a4f5ea3f3114784742662a67ad32f |
| LCHIJA | extendedrenderer | v1.0 | coroutil-1.12.1-1.2.32.jar | None |
| LCHIJA | coroutil | 1.12.1-1.2.32 | coroutil-1.12.1-1.2.32.jar | None |
| LCHIJA | configmod | v1.0 | coroutil-1.12.1-1.2.32.jar | None |
| LCHIJA | playerrevive | 1.0 | PlayerRevive_v1.2.28_mc1.12.2.jar | None |
| LCHIJA | creativecore | 1.9.9 | CreativeCore_v1.9.89_mc1.12.2.jar | None |
| LCHIJA | dmonsters | 1.7 | Deadly+Monsters+1.71.jar | None |
| LCHIJA | desirepaths | 1.12.1-1.2.8 | desirepaths-1.12.1-1.2.8.jar | None |
| LCHIJA | divergentunderground | 0.64.0 | Divergent-Underground-1.12-0.64.0.jar | None |
| LCHIJA | dropt | 1.12.2-1.16.1 | dropt-1.12.2-1.16.1.jar | None |
| LCHIJA | sereneseasons | 1.2.18 | SereneSeasons-1.12.2-1.2.18-universal.jar | None |
| LCHIJA | orelib | 3.6.0.1 | OreLib-1.12.2-3.6.0.1.jar | 7a2128d395ad96ceb9d9030fbd41d035b435753a |
| LCHIJA | dsurround | 3.6.0.2 | DynamicSurroundings-1.12.2-3.6.0.2.jar | 7a2128d395ad96ceb9d9030fbd41d035b435753a |
| LCHIJA | earthworks | 1.3.4.3 | Earthworks-1.12-1.3.6 (1).jar | None |
| LCHIJA | eerieentities | 1.0.7 | EerieEntities-1.12.2-1.0.7.jar | d476d1b22b218a10d845928d1665d45fce301b27 |
| LCHIJA | mod_lavacow | 1.0.11 | Fishs_Undead_Rising-1.0.11.jar | None |
| LCHIJA | fistsofflesh | 1.3.1 | FistsOfFlesh-1.3.1.jar | None |
| LCHIJA | foamfix | 0.10.9-1.12.2 | foamfix-0.10.9-1.12.2.jar | None |
| LCHIJA | hardcoredarkness | 2.0 | HardcoreDarkness-MC1.12.2-2.0.jar | d72e0dd57935b3e9476212aea0c0df352dd76291 |
| LCHIJA | heartdrops | 1.12.2-2.0.8.1 | heartdrops-1.12.2-2.0.8.1.jar | None |
| LCHIJA | hidenames | 1.4 | HideNames-1.12-1.4.jar | None |
| LCHIJA | hungerpersistence | 1.0.1 | HungerPersistence-mc1.12-1.0.1.jar | None |
| LCHIJA | immersivepetroleum | 1.1.9 | immersivepetroleum-1.12.2-1.1.9.jar | None |
| LCHIJA | immersiveposts | 0.1.4 | ImmersivePosts-0.1.4.jar | 0ba8738eadcf158e7fe1452255a73a022fb15feb |
| LCHIJA | inventorytweaks | 1.63+release.109.220f184 | InventoryTweaks-1.63.jar | 55d2cd4f5f0961410bf7b91ef6c6bf00a766dcbe |
| LCHIJA | literalascension | 1.12.2-1.0.2.2 | literalascension-1.12.2-2.0.0.0.jar | None |
| LCHIJA | magneticraft | 2.7.0 | Magneticraft_1.12-2.8.2-dev.jar | None |
| LCHIJA | maille | 2.1 | Maille1.12.2-2.1.jar | None |
| LCHIJA | mobends | 0.24 | mobends-0.24_for_MC-1.12.jar | None |
| LCHIJA | morecharcoal | 1.12.2-1.0.9 | morecharcoal-1.12.2-1.0.9.jar | None |
| LCHIJA | moveplus | 1.12.1-2.4.6 | moveplus-1.12.1-2.4.6.jar | None |
| LCHIJA | mtlib | 3.0.6 | MTLib-3.0.6.jar | None |
| LCHIJA | multimob | 1.0.5 | multimob-1.0.5.jar | None |
| LCHIJA | primitivemobs | 1.2.3a | primitivemobs-1.2.3a.jar | None |
| LCHIJA | punchmenot | 1.1 | Punch+Me+Not+1.3-1.12.jar | None |
| LCHIJA | pyrotech | 1.12.2-1.4.13 | pyrotech-1.12.2-1.4.13.jar | None |
| LCHIJA | realdrops | 1.2.14 | RealisticItemDrops-1.2.14.jar | None |
| LCHIJA | redstoneflux | 2.1.0 | RedstoneFlux-1.12-2.1.0.6-universal.jar | 8a6abf2cb9e141b866580d369ba6548732eff25f |
| LCHIJA | rockhounding_core | 3.22 | rockhounding_core-1.12.2-3.22.jar | None |
| LCHIJA | gbook | 2.9.2 | Guidebook-1.12.2-2.9.2.jar | None |
| LCHIJA | rockhounding_chemistry | 1.12.2-3.46 | rockhounding_chemistry-1.12.2-3.46.jar | None |
| LCHIJA | roughmobs | 2.0.0 | roughmobs2-1.12.2_2.0.15.jar | None |
| LCHIJA | sit | v1.2.4 | sit-1.12.2-v1.2.4.jar | None |
| LCHIJA | spartanshields | 1.5.4 | SpartanShields-1.12.2-1.5.4.jar | None |
| LCHIJA | spartanweaponry | beta 1.3.8 | SpartanWeaponry-1.12.2-beta-1.3.8.jar | None |
| LCHIJA | spiceoflife | 1.3.12 | SpiceOfLife-mc1.12-1.3.12.jar | None |
| LCHIJA | surge | 2.0.77 | Surge-1.12.2-2.0.77.jar | d476d1b22b218a10d845928d1665d45fce301b27 |
| LCHIJA | tallgates | 1.0.0 | TallGates-1.12.2-1.0.0.1.jar | None |
| LCHIJA | tetra | 0.39.1 | tetra-1.12.2-0.39.1.jar | None |
| LCHIJA | toolbelt | 1.9.12 | ToolBelt-1.12.2-1.9.12.jar | None |
| LCHIJA | vanillafix | 1.0.10-SNAPSHOT | VanillaFix-1.0.10-99.jar | None |
| LCHIJA | varodd | 5.2 | varodd-1.12.2-5.2.jar | None |
| LCHIJA | venomousfangs | 1.1 | VenomousFangs1.12-1.1.jar | None |
| LCHIJA | wawla | 2.5.273 | Wawla-1.12.2-2.5.273.jar | d476d1b22b218a10d845928d1665d45fce301b27 |
| LCHIJA | webslinger | 2.2.4 | webslinger-1.12.2-2.2.4.jar | 1e57901a90acd4a3a54295b6decff5397be51a31 |
| LCHIJA | worleycaves | 1.5.1 | worleycaves-1.5.1.jar | None |
| LCHIJA | zombieawareness | 1.12.1-1.11.16 | zombieawareness-1.12.1-1.11.16.jar | None |
| LCHIJA | phosphor-lighting | 1.12.2-0.2.6 | phosphor-1.12.2-0.2.6+build50-universal.jar | f0387d288626cc2d937daa504e74af570c52a2f1 |
| LCHIJA | rtg | 6.1.0.0-snapshot.1 | RTG-1.12.2-6.1.0.0-snapshot.1.jar | None |
| LCHIJA | snowrealmagic | 0.3.3 | SnowRealMagic-0.3.3.jar | None |
| LCHIJA | thebetweenlands | 3.5.5 | TheBetweenlands-3.5.5-universal.jar | 38067d6878811efb38b6a045521cfd80b9b60b38 |
Loaded coremods (and transformers): SSLoadingPlugin (SereneSeasons-1.12.2-1.2.18-universal.jar)
sereneseasons.asm.transformer.EntityRendererTransformer
sereneseasons.asm.transformer.WorldTransformer
Do not report to Forge! (If you haven't disabled the FoamFix coremod, try disabling it in the config! Note that this bit of text will still appear.) (foamfix-0.10.9-1.12.2.jar)
pl.asie.foamfix.coremod.FoamFixTransformer
AppleCore (AppleCore-mc1.12.2-3.2.0.jar)
squeek.applecore.asm.TransformerModuleHandler
CTMCorePlugin (CTM-MC1.12.2-1.0.1.30.jar)
team.chisel.ctm.client.asm.CTMTransformer
ForgelinPlugin (Forgelin-1.8.4.jar)

TheBetweenlandsLoadingPlugin (TheBetweenlands-3.5.5-core.jar)
thebetweenlands.core.TheBetweenlandsClassTransformer
TransformLoader (DynamicSurroundings-1.12.2-3.6.0.2.jar)

IELoadingPlugin (ImmersiveEngineering-core-0.12-92.jar)
blusunrize.immersiveengineering.common.asm.IEClassTransformer
LoadingPlugin (Bloodmoon-MC1.12.2-1.5.3.jar)
lumien.bloodmoon.asm.ClassTransformer
Inventory Tweaks Coremod (InventoryTweaks-1.63.jar)
invtweaks.forge.asm.ContainerTransformer
PhosphorFMLLoadingPlugin (phosphor-1.12.2-0.2.6+build50-universal.jar)

BewitchmentFMLLoadingPlugin (bewitchment-1.12.2-0.0.21.5.jar)

VanillaFixLoadingPlugin (VanillaFix-1.0.10-99.jar)

CreativePatchingLoader (CreativeCore_v1.9.89_mc1.12.2.jar)

SurgeLoadingPlugin (Surge-1.12.2-2.0.77.jar)

BetterFoliageLoader (BetterFoliage-MC1.12-2.2.0.jar)
mods.betterfoliage.loader.BetterFoliageTransformer