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

Time: 2021-10-08 06:51
Description: Exception generating new chunk

java.lang.NullPointerException: Cannot invoke "dhi.a(double, double, double)" because "this.a" is null
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.block.state.BlockState getMaterial(double,int,int,net.minecraft.world.level.block.state.BlockState,net.minecraft.world.level.block.state.BlockState,double,double)(NoiseMaterialSurfaceBuilder.java:39)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder$SteepMaterial getSteepMaterial()(NoiseMaterialSurfaceBuilder.java:39)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.block.state.BlockState getTopMaterial(net.minecraft.world.level.levelgen.surfacebuilders.SurfaceBuilderBaseConfiguration,int,int)(NoiseMaterialSurfaceBuilder.java:39)
	at net.minecraft.world.level.levelgen.surfacebuilders.GroveSurfaceBuilder.net.minecraft.world.level.block.state.BlockState getTopMaterial(net.minecraft.world.level.levelgen.surfacebuilders.SurfaceBuilderBaseConfiguration,int,int)(GroveSurfaceBuilder.java:22)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.void apply(java.util.Random,net.minecraft.world.level.chunk.BlockColumn,net.minecraft.world.level.biome.Biome,int,int,int,double,net.minecraft.world.level.block.state.BlockState,net.minecraft.world.level.block.state.BlockState,int,int,long,net.minecraft.world.level.levelgen.surfacebuilders.SurfaceBuilderBaseConfiguration)(NoiseMaterialSurfaceBuilder.java:31)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder$SteepMaterial getSteepMaterial()(NoiseMaterialSurfaceBuilder.java:31)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.block.state.BlockState getTopMaterial(net.minecraft.world.level.levelgen.surfacebuilders.SurfaceBuilderBaseConfiguration,int,int)(NoiseMaterialSurfaceBuilder.java:31)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder$SteepMaterial getSteepMaterial()(NoiseMaterialSurfaceBuilder.java:14)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.block.state.BlockState getTopMaterial(net.minecraft.world.level.levelgen.surfacebuilders.SurfaceBuilderBaseConfiguration,int,int)(NoiseMaterialSurfaceBuilder.java:14)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.void apply(java.util.Random,net.minecraft.world.level.chunk.BlockColumn,net.minecraft.world.level.biome.Biome,int,int,int,double,net.minecraft.world.level.block.state.BlockState,net.minecraft.world.level.block.state.BlockState,int,int,long,net.minecraft.world.level.levelgen.surfacebuilders.SurfaceBuilderConfiguration)(NoiseMaterialSurfaceBuilder.java:14)
	at net.minecraft.world.level.levelgen.surfacebuilders.ConfiguredSurfaceBuilder.void apply(java.util.Random,net.minecraft.world.level.chunk.BlockColumn,net.minecraft.world.level.biome.Biome,int,int,int,double,net.minecraft.world.level.block.state.BlockState,net.minecraft.world.level.block.state.BlockState,int,int,long)(ConfiguredSurfaceBuilder.java:27)
	at net.minecraft.world.level.biome.Biome.void buildSurfaceAt(java.util.Random,net.minecraft.world.level.chunk.BlockColumn,int,int,int,double,net.minecraft.world.level.block.state.BlockState,net.minecraft.world.level.block.state.BlockState,int,int,long)(Biome.java:353)
	at net.minecraft.world.level.levelgen.NoiseBasedChunkGenerator.void buildSurface(net.minecraft.server.level.WorldGenRegion,net.minecraft.world.level.StructureFeatureManager,net.minecraft.world.level.chunk.ChunkAccess)(NoiseBasedChunkGenerator.java:345)
	at net.minecraft.world.level.chunk.ChunkStatus.void lambda$static$8(net.minecraft.world.level.chunk.ChunkStatus,net.minecraft.server.level.ServerLevel,net.minecraft.world.level.chunk.ChunkGenerator,java.util.List,net.minecraft.world.level.chunk.ChunkAccess)(ChunkStatus.java:98)
	at net.minecraft.world.level.chunk.ChunkStatus$SimpleGenerationTask.java.util.concurrent.CompletableFuture doWork(net.minecraft.world.level.chunk.ChunkStatus,java.util.concurrent.Executor,net.minecraft.server.level.ServerLevel,net.minecraft.world.level.chunk.ChunkGenerator,net.minecraft.world.level.levelgen.structure.templatesystem.StructureManager,net.minecraft.server.level.ThreadedLevelLightEngine,java.util.function.Function,java.util.List,net.minecraft.world.level.chunk.ChunkAccess,boolean)(ChunkStatus.java:298)
	at net.minecraft.world.level.chunk.ChunkStatus$SimpleGenerationTask.void doWork(net.minecraft.world.level.chunk.ChunkStatus,net.minecraft.server.level.ServerLevel,net.minecraft.world.level.chunk.ChunkGenerator,java.util.List,net.minecraft.world.level.chunk.ChunkAccess)(ChunkStatus.java:298)
	at net.minecraft.world.level.chunk.ChunkStatus.java.util.concurrent.CompletableFuture generate(java.util.concurrent.Executor,net.minecraft.server.level.ServerLevel,net.minecraft.world.level.chunk.ChunkGenerator,net.minecraft.world.level.levelgen.structure.templatesystem.StructureManager,net.minecraft.server.level.ThreadedLevelLightEngine,java.util.function.Function,java.util.List,boolean)(ChunkStatus.java:249)
	at net.minecraft.server.level.ChunkMap.java.util.concurrent.CompletableFuture lambda$scheduleChunkGeneration$20(net.minecraft.world.level.ChunkPos,net.minecraft.server.level.ChunkHolder,net.minecraft.world.level.chunk.ChunkStatus,java.util.concurrent.Executor,java.util.List)(ChunkMap.java:624)
	at com.mojang.datafixers.util.Either$Left.null map(null)(Either.java:38)
	at net.minecraft.server.level.ChunkMap.java.util.concurrent.CompletionStage lambda$scheduleChunkGeneration$22(net.minecraft.world.level.ChunkPos,net.minecraft.server.level.ChunkHolder,net.minecraft.world.level.chunk.ChunkStatus,java.util.concurrent.Executor,com.mojang.datafixers.util.Either)(ChunkMap.java:618)
	at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1146)
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478)
	at net.minecraft.server.level.ChunkTaskPriorityQueueSorter.void lambda$message$1(java.lang.Runnable,net.minecraft.util.thread.ProcessorHandle)(ChunkTaskPriorityQueueSorter.java:58)
	at net.minecraft.util.thread.ProcessorMailbox.boolean pollTask()(ProcessorMailbox.java:91)
	at net.minecraft.util.thread.ProcessorMailbox.int pollUntil(it.unimi.dsi.fastutil.ints.Int2BooleanFunction)(ProcessorMailbox.java:146)
	at net.minecraft.util.thread.ProcessorMailbox.void run()(ProcessorMailbox.java:102)
	at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1434)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:295)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1016)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1665)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1598)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)


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

-- Head --
Thread: Server thread
Stacktrace:
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.block.state.BlockState getMaterial(double,int,int,net.minecraft.world.level.block.state.BlockState,net.minecraft.world.level.block.state.BlockState,double,double)(NoiseMaterialSurfaceBuilder.java:39)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder$SteepMaterial getSteepMaterial()(NoiseMaterialSurfaceBuilder.java:39)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.block.state.BlockState getTopMaterial(net.minecraft.world.level.levelgen.surfacebuilders.SurfaceBuilderBaseConfiguration,int,int)(NoiseMaterialSurfaceBuilder.java:39)
	at net.minecraft.world.level.levelgen.surfacebuilders.GroveSurfaceBuilder.net.minecraft.world.level.block.state.BlockState getTopMaterial(net.minecraft.world.level.levelgen.surfacebuilders.SurfaceBuilderBaseConfiguration,int,int)(GroveSurfaceBuilder.java:22)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.void apply(java.util.Random,net.minecraft.world.level.chunk.BlockColumn,net.minecraft.world.level.biome.Biome,int,int,int,double,net.minecraft.world.level.block.state.BlockState,net.minecraft.world.level.block.state.BlockState,int,int,long,net.minecraft.world.level.levelgen.surfacebuilders.SurfaceBuilderBaseConfiguration)(NoiseMaterialSurfaceBuilder.java:31)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder$SteepMaterial getSteepMaterial()(NoiseMaterialSurfaceBuilder.java:31)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.block.state.BlockState getTopMaterial(net.minecraft.world.level.levelgen.surfacebuilders.SurfaceBuilderBaseConfiguration,int,int)(NoiseMaterialSurfaceBuilder.java:31)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder$SteepMaterial getSteepMaterial()(NoiseMaterialSurfaceBuilder.java:14)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.net.minecraft.world.level.block.state.BlockState getTopMaterial(net.minecraft.world.level.levelgen.surfacebuilders.SurfaceBuilderBaseConfiguration,int,int)(NoiseMaterialSurfaceBuilder.java:14)
	at net.minecraft.world.level.levelgen.surfacebuilders.NoiseMaterialSurfaceBuilder.void apply(java.util.Random,net.minecraft.world.level.chunk.BlockColumn,net.minecraft.world.level.biome.Biome,int,int,int,double,net.minecraft.world.level.block.state.BlockState,net.minecraft.world.level.block.state.BlockState,int,int,long,net.minecraft.world.level.levelgen.surfacebuilders.SurfaceBuilderConfiguration)(NoiseMaterialSurfaceBuilder.java:14)
	at net.minecraft.world.level.levelgen.surfacebuilders.ConfiguredSurfaceBuilder.void apply(java.util.Random,net.minecraft.world.level.chunk.BlockColumn,net.minecraft.world.level.biome.Biome,int,int,int,double,net.minecraft.world.level.block.state.BlockState,net.minecraft.world.level.block.state.BlockState,int,int,long)(ConfiguredSurfaceBuilder.java:27)
	at net.minecraft.world.level.biome.Biome.void buildSurfaceAt(java.util.Random,net.minecraft.world.level.chunk.BlockColumn,int,int,int,double,net.minecraft.world.level.block.state.BlockState,net.minecraft.world.level.block.state.BlockState,int,int,long)(Biome.java:353)
	at net.minecraft.world.level.levelgen.NoiseBasedChunkGenerator.void buildSurface(net.minecraft.server.level.WorldGenRegion,net.minecraft.world.level.StructureFeatureManager,net.minecraft.world.level.chunk.ChunkAccess)(NoiseBasedChunkGenerator.java:345)
	at net.minecraft.world.level.chunk.ChunkStatus.void lambda$static$8(net.minecraft.world.level.chunk.ChunkStatus,net.minecraft.server.level.ServerLevel,net.minecraft.world.level.chunk.ChunkGenerator,java.util.List,net.minecraft.world.level.chunk.ChunkAccess)(ChunkStatus.java:98)
	at net.minecraft.world.level.chunk.ChunkStatus$SimpleGenerationTask.java.util.concurrent.CompletableFuture doWork(net.minecraft.world.level.chunk.ChunkStatus,java.util.concurrent.Executor,net.minecraft.server.level.ServerLevel,net.minecraft.world.level.chunk.ChunkGenerator,net.minecraft.world.level.levelgen.structure.templatesystem.StructureManager,net.minecraft.server.level.ThreadedLevelLightEngine,java.util.function.Function,java.util.List,net.minecraft.world.level.chunk.ChunkAccess,boolean)(ChunkStatus.java:298)
	at net.minecraft.world.level.chunk.ChunkStatus$SimpleGenerationTask.void doWork(net.minecraft.world.level.chunk.ChunkStatus,net.minecraft.server.level.ServerLevel,net.minecraft.world.level.chunk.ChunkGenerator,java.util.List,net.minecraft.world.level.chunk.ChunkAccess)(ChunkStatus.java:298)
	at net.minecraft.world.level.chunk.ChunkStatus.java.util.concurrent.CompletableFuture generate(java.util.concurrent.Executor,net.minecraft.server.level.ServerLevel,net.minecraft.world.level.chunk.ChunkGenerator,net.minecraft.world.level.levelgen.structure.templatesystem.StructureManager,net.minecraft.server.level.ThreadedLevelLightEngine,java.util.function.Function,java.util.List,boolean)(ChunkStatus.java:249)

-- Chunk to be generated --
Details:
	Location: 2,2
	Position hash: 8589934594
	Generator: csd@4d350e73
Stacktrace:
	at net.minecraft.server.level.ChunkMap.java.util.concurrent.CompletableFuture lambda$scheduleChunkGeneration$20(net.minecraft.world.level.ChunkPos,net.minecraft.server.level.ChunkHolder,net.minecraft.world.level.chunk.ChunkStatus,java.util.concurrent.Executor,java.util.List)(ChunkMap.java:624)
	at com.mojang.datafixers.util.Either$Left.null map(null)(Either.java:38)
	at net.minecraft.server.level.ChunkMap.java.util.concurrent.CompletionStage lambda$scheduleChunkGeneration$22(net.minecraft.world.level.ChunkPos,net.minecraft.server.level.ChunkHolder,net.minecraft.world.level.chunk.ChunkStatus,java.util.concurrent.Executor,com.mojang.datafixers.util.Either)(ChunkMap.java:618)
	at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1146)
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478)
	at net.minecraft.server.level.ChunkTaskPriorityQueueSorter.void lambda$message$1(java.lang.Runnable,net.minecraft.util.thread.ProcessorHandle)(ChunkTaskPriorityQueueSorter.java:58)
	at net.minecraft.util.thread.ProcessorMailbox.boolean pollTask()(ProcessorMailbox.java:91)
	at net.minecraft.util.thread.ProcessorMailbox.int pollUntil(it.unimi.dsi.fastutil.ints.Int2BooleanFunction)(ProcessorMailbox.java:146)
	at net.minecraft.util.thread.ProcessorMailbox.void run()(ProcessorMailbox.java:102)

-- Affected level --
Details:
	All players: 0 total; []
	Chunk stats: 529
	Level dimension: minecraft:overworld
	Level spawn location: World: (8,64,8), Section: (at 8,0,8 in 0,4,0; chunk contains blocks 0,-64,0 to 15,319,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,-64,0 to 511,319,511)
	Level time: 0 game time, 0 day time
	Level name: red
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Known server brands: vanilla
	Level was modded: false
	Level storage version: 0x04ABD - Anvil
Stacktrace:
	at net.minecraft.server.MinecraftServer.void createLevels(net.minecraft.server.level.progress.ChunkProgressListener)(MinecraftServer.java:393)
	at net.minecraft.server.MinecraftServer.net.minecraft.SystemReport fillServerSystemReport(net.minecraft.SystemReport)(MinecraftServer.java:393)
	at net.minecraft.server.MinecraftServer.boolean isSingleplayerOwner(com.mojang.authlib.GameProfile)(MinecraftServer.java:393)
	at net.minecraft.server.MinecraftServer.void loadLevel()(MinecraftServer.java:331)
	at net.minecraft.client.server.IntegratedServer.boolean initServer()(IntegratedServer.java:74)
	at net.minecraft.server.MinecraftServer.void runServer()(MinecraftServer.java:667)
	at net.minecraft.server.MinecraftServer.net.minecraft.server.MinecraftServer spin(java.util.function.Function)(MinecraftServer.java:274)
	at net.minecraft.server.MinecraftServer.net.minecraft.SystemReport fillServerSystemReport(net.minecraft.SystemReport)(MinecraftServer.java:274)
	at net.minecraft.server.MinecraftServer.boolean isSingleplayerOwner(com.mojang.authlib.GameProfile)(MinecraftServer.java:274)
	at net.minecraft.server.MinecraftServer.void lambda$spin$2(java.util.concurrent.atomic.AtomicReference)(MinecraftServer.java:274)
	at java.base/java.lang.Thread.run(Thread.java:831)

-- System Details --
Details:
	Minecraft Version: 21w40a
	Minecraft Version ID: 21w40a
	Operating System: Linux (amd64) version 5.11.0-37-generic
	Java Version: 16.0.1, Microsoft
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
	Memory: 493328320 bytes (470 MiB) / 1644167168 bytes (1568 MiB) up to 2147483648 bytes (2048 MiB)
	CPUs: 4
	Processor Vendor: GenuineIntel
	Processor Name: Intel(R) Core(TM) i5-4200M CPU @ 2.50GHz
	Identifier: Intel64 Family 6 Model 60 Stepping 3
	Microarchitecture: Haswell (Client)
	Frequency (GHz): 2,50
	Number of physical packages: 1
	Number of physical CPUs: 2
	Number of logical CPUs: 4
	Graphics card #0 name: 4th Gen Core Processor Integrated Graphics Controller
	Graphics card #0 vendor: Intel Corporation (0x8086)
	Graphics card #0 VRAM (MB): 256,00
	Graphics card #0 deviceId: 0x0416
	Graphics card #0 versionInfo: unknown
	Virtual memory max (MB): 3920,08
	Virtual memory used (MB): 4941,14
	Swap memory total (MB): 0,00
	Swap memory used (MB): 0,00
	JVM Flags: 8 total; -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	Player Count: 0 / 8; []
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.