Crash in certain biomes

[MCEventHorizon]

Hello, I've been searching why I was crashing in certain biomes and I think it's your mod that's causing the issue. I saw this issue on this post and I think it's the same as this one, I think it's an incompatibility with Biomes O'Plenty cause some biomes probably have spawn weight of 0 and your mod is trying to spawn mobs. I removed your mod and everything is working on the same seed so I think this is the issue.

Crash report: ---- Minecraft Crash Report ---- // Hey, that tickles! Hehehe!

Time: 7/27/21 6:02 PM Description: Exception generating new chunk

java.lang.IllegalArgumentException: null at net.minecraft.util.WeightedRandom.func_76273_a(SourceFile:20) ~[?:?] {re:classloading} at net.minecraft.util.WeightedRandom.func_76271_a(SourceFile:39) ~[?:?] {re:classloading} at net.minecraft.world.spawner.WorldEntitySpawner.func_77191_a(WorldEntitySpawner.java:334) ~[?:?] {re:classloading} at net.minecraft.world.gen.NoiseChunkGenerator.func_230354a(NoiseChunkGenerator.java:623) ~[?:?] {re:classloading} at net.minecraft.world.chunk.ChunkStatus.func_222602_b(ChunkStatus.java:89) ~[?:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.chunk.ChunkStatus$ISelectiveWorker.doWork(ChunkStatus.java:240) ~[?:?] {re:classloading} at net.minecraft.world.chunk.ChunkStatus.func_223198_a(ChunkStatus.java:198) ~[?:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.server.ChunkManager.lambda$null$18(ChunkManager.java:524) ~[?:?] {re:classloading} at com.mojang.datafixers.util.Either$Left.map(Either.java:38) ~[datafixerupper-4.0.26.jar:?] {re:classloading,re:classloading} at net.minecraft.world.server.ChunkManager.lambda$scheduleChunkGeneration$20(ChunkManager.java:522) ~[?:?] {re:classloading} at java.util.concurrent.CompletableFuture.uniCompose(Unknown Source) ~[?:1.8.0_301] {} at java.util.concurrent.CompletableFuture$UniCompose.tryFire(Unknown Source) ~[?:1.8.0_301] {} at java.util.concurrent.CompletableFuture$Completion.run(Unknown Source) ~[?:1.8.0_301] {} at net.minecraft.world.chunk.ChunkTaskPriorityQueueSorter.func_219083_b(SourceFile:58) ~[?:?] {re:classloading} at net.minecraft.util.concurrent.DelegatedTaskExecutor.func_213148_e(SourceFile:94) ~[?:?] {re:classloading} at net.minecraft.util.concurrent.DelegatedTaskExecutor.func_213145_a(SourceFile:137) ~[?:?] {re:classloading} at net.minecraft.util.concurrent.DelegatedTaskExecutor.run(SourceFile:105) ~[?:?] {re:classloading} at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(Unknown Source) ~[?:1.8.0_301] {} at java.util.concurrent.ForkJoinTask.doExec(Unknown Source) ~[?:1.8.0_301] {} at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(Unknown Source) ~[?:1.8.0_301] {} at java.util.concurrent.ForkJoinPool.runWorker(Unknown Source) ~[?:1.8.0_301] {} at java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source) ~[?:1.8.0_301] {}

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

-- Head -- Thread: Server thread Stacktrace: at net.minecraft.util.WeightedRandom.func_76273_a(SourceFile:20) ~[?:?] {re:classloading} at net.minecraft.util.WeightedRandom.func_76271_a(SourceFile:39) ~[?:?] {re:classloading} at net.minecraft.world.spawner.WorldEntitySpawner.func_77191_a(WorldEntitySpawner.java:334) ~[?:?] {re:classloading} at net.minecraft.world.gen.NoiseChunkGenerator.func_230354a(NoiseChunkGenerator.java:623) ~[?:?] {re:classloading} at net.minecraft.world.chunk.ChunkStatus.func_222602_b(ChunkStatus.java:89) ~[?:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.chunk.ChunkStatus$ISelectiveWorker.doWork(ChunkStatus.java:240) ~[?:?] {re:classloading} at net.minecraft.world.chunk.ChunkStatus.func_223198_a(ChunkStatus.java:198) ~[?:?] {re:classloading,pl:accesstransformer:B} -- Chunk to be generated -- Details: Location: -138,-77 Position hash: -326417514634 Generator: net.minecraft.world.gen.NoiseChunkGenerator@22caa6f Stacktrace: at net.minecraft.world.server.ChunkManager.lambda$null$18(ChunkManager.java:524) ~[?:?] {re:classloading} at com.mojang.datafixers.util.Either$Left.map(Either.java:38) ~[datafixerupper-4.0.26.jar:?] {re:classloading,re:classloading,re:classloading} at net.minecraft.world.server.ChunkManager.lambda$scheduleChunkGeneration$20(ChunkManager.java:522) ~[?:?] {re:classloading} at java.util.concurrent.CompletableFuture.uniCompose(Unknown Source) ~[?:1.8.0_301] {} at java.util.concurrent.CompletableFuture$UniCompose.tryFire(Unknown Source) ~[?:1.8.0_301] {} at java.util.concurrent.CompletableFuture$Completion.run(Unknown Source) ~[?:1.8.0_301] {} at net.minecraft.world.chunk.ChunkTaskPriorityQueueSorter.func_219083_b(SourceFile:58) ~[?:?] {re:classloading} at net.minecraft.util.concurrent.DelegatedTaskExecutor.func_213148_e(SourceFile:94) ~[?:?] {re:classloading} at net.minecraft.util.concurrent.DelegatedTaskExecutor.func_213145_a(SourceFile:137) ~[?:?] {re:classloading}

-- Affected level -- Details: All players: 1 total; [ServerPlayerEntity['EventHorizon_'/271, l='ServerLevel[New World]', x=-2129.67, y=105.11, z=-1256.17]] Chunk stats: ServerChunkCache: 2979 Level dimension: minecraft:overworld Level spawn location: World: (-152,63,-134), Chunk: (at 8,3,10 in -10,-9; contains blocks -160,0,-144 to -145,255,-129), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1) Level time: 2200 game time, 2200 day time Level name: New World Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true Level weather: Rain time: 64947 (now: false), thunder time: 80511 (now: false) Known server brands: forge Level was modded: true Level storage version: 0x04ABD - Anvil Stacktrace: at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:854) ~[?:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:787) ~[?:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:78) ~[?:?] {re:classloading,pl:runtimedistcleaner:A} at net.minecraft.server.MinecraftServer.func_240802v(MinecraftServer.java:642) ~[?:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.func_240783a(MinecraftServer.java:232) ~[?:?] {re:classloading,pl:accesstransformer:B} at java.lang.Thread.run(Unknown Source) [?:1.8.0_301] {}

-- System Details -- Details: Minecraft Version: 1.16.5 Minecraft Version ID: 1.16.5 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_301, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 3868106184 bytes (3688 MB) / 8589934592 bytes (8192 MB) up to 8589934592 bytes (8192 MB) CPUs: 6 JVM Flags: 13 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx6144m -Xms256m -XX:PermSize=256m -XX:+UseG1GC -Xmx8G -Xms8G -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M ModLauncher: 8.0.9+86+master.3cf110c ModLauncher launch target: fmlclient ModLauncher naming: srg ModLauncher services: /mixin-0.8.2.jar mixin PLUGINSERVICE /eventbus-4.0.0.jar eventbus PLUGINSERVICE /forge-1.16.5-36.2.0.jar object_holder_definalize PLUGINSERVICE /forge-1.16.5-36.2.0.jar runtime_enum_extender PLUGINSERVICE /accesstransformers-3.0.1.jar accesstransformer PLUGINSERVICE /forge-1.16.5-36.2.0.jar capability_inject_definalize PLUGINSERVICE /forge-1.16.5-36.2.0.jar runtimedistcleaner PLUGINSERVICE /mixin-0.8.2.jar mixin TRANSFORMATIONSERVICE /forge-1.16.5-36.2.0.jar fml TRANSFORMATIONSERVICE FML: 36.2 Forge: net.minecraftforge:36.2.0 FML Language Providers: javafml@36.2 minecraft@1 Mod List: forge-1.16.5-36.2.0-client.jar |Minecraft |minecraft |1.16.5 |DONE |Manifest: NOSIGNATURE astikorcarts-1.16.5-1.1.1.jar |AstikorCarts |astikorcarts |1.1.1 |DONE |Manifest: NOSIGNATURE forge-1.16.5-36.2.0-universal.jar |Forge |forge |36.2.0 |DONE |Manifest: 22:af:21:d8:19:82:7f:93:94:fe:2b:ac:b7:e4:41:57:68:39:87:b1:a7:5c:c6:44:f9:25:74:21:14:f5:0d:90 horse_tack-3.0-1.16.3release.jar |Horse Tack |horse_tack |3.0 |DONE |Manifest: NOSIGNATURE BiomesOPlenty-1.16.5-13.1.0.477-universal.jar |Biomes O' Plenty |biomesoplenty |1.16.5-13.1.0.477 |DONE |Manifest: NOSIGNATURE MrCrayfishs-Furniture-Mod-1.16.5.jar |MrCrayfish's Furniture Mod |cfm |7.0.0-pre19 |DONE |Manifest: NOSIGNATURE horse_colors-1.16.5-1.6.0.2.jar |Realistic Horse Genetics |horsecolors |1.16.5-1.6.0.2 |DONE |Manifest: NOSIGNATURE Crash Report UUID: 4e6f80fe-1fbf-487d-b696-2e3b89f79281 Player Count: 1 / 8; [ServerPlayerEntity['EventHorizon'/271, l='ServerLevel[New World]', x=-2129.67, y=105.11, z=-1256.17]] Data Packs: vanilla, mod:astikorcarts, mod:forge, mod:horse_tack (incompatible), mod:biomesoplenty, mod:cfm (incompatible), mod:horse_colors Type: Integrated Server (map_client.txt) Is Modded: Definitely; Client brand changed to 'forge'

[sekelsta]

Thanks for the report! I haven't been able to reproduce this crash yet. If you could get me the world seed, that would be super helpful.

[MCEventHorizon]

Just download BiomesOPlenty and add 2 of your mods, I uploaded a video where you can see everything: https://youtu.be/HeQ5aEJg_f4

[sekelsta]

Thanks! It seems this issue is caused by setting horseSpawnMultiplier in the config to values smaller than 1.0. I'll have a fix soon, but in the meantime if you set that value back to 1.0 or higher it should fix the crashes.

[MCEventHorizon]

Oh, I get it. So how would I disable them spawning in the wild then?

[sekelsta]

It's fixed in the code now and once the next update is out will no longer crash even with horseSpawnMulitplier set to 0.

Record for posterity: the crash was with a seed 'Test', after teleporting to coordinates 3440, 120, -3160 with horseSpawnMultiplier set to 0.0 and with these mods installed: astikorcarts-1.16.5-1.1.1.jar BiomesOPlenty-1.16.5-13.1.0.477-universal.jar cfm-7.0.0-pre19-mc1.16.3.jar horse_colors-1.16.5-1.6.1.1.jar horse_tack-3.0-1.16.3release.jar