---- Minecraft Crash Report ----
// There are four lights!

Time: 24/05/20 12:15
Description: Feature placement

java.lang.UnsupportedOperationException
	at com.google.common.collect.ImmutableList.sort(ImmutableList.java:565)
	at asi.a(SourceFile:43)
	at asi.b(SourceFile:60)
	at cot.a(SourceFile:42)
	at civ.a(SourceFile:56)
	at civ.a(SourceFile:35)
	at civ.a(SourceFile:17)
	at cja.a(SourceFile:44)
	at cow.a(SourceFile:82)
	at csr.a(SourceFile:83)
	at csr.a(SourceFile:79)
	at csy.a(SourceFile:75)
	at bqd.a(SourceFile:560)
	at bqd$$Lambda$4994/1064374294.accept(Unknown Source)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at it.unimi.dsi.fastutil.longs.LongIterator$$Lambda$4989/124324524.accept(Unknown Source)
	at java.util.PrimitiveIterator$OfLong.forEachRemaining(PrimitiveIterator.java:189)
	at it.unimi.dsi.fastutil.longs.LongIterator.forEachRemaining(LongIterator.java:53)
	at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502)
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
	at bqd.a(SourceFile:559)
	at cga.a(SourceFile:210)
	at cgc.c(SourceFile:84)
	at cgc$$Lambda$1663/715224798.doWork(Unknown Source)
	at cgc.a(SourceFile:214)
	at yi.a(SourceFile:569)
	at yi$$Lambda$4027/1435700071.apply(Unknown Source)
	at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
	at yi.a(SourceFile:563)
	at yi$$Lambda$4024/1070389635.apply(Unknown Source)
	at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:952)
	at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:926)
	at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442)
	at yk.b(SourceFile:58)
	at yk$$Lambda$3936/360602807.run(Unknown Source)
	at amc.e(SourceFile:94)
	at amc.a(SourceFile:137)
	at amc.run(SourceFile:105)
	at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1402)
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1689)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)


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

-- Head --
Thread: Server thread
Stacktrace:
	at com.google.common.collect.ImmutableList.sort(ImmutableList.java:565)
	at asi.a(SourceFile:43)
	at asi.b(SourceFile:60)
	at cot.a(SourceFile:42)
	at civ.a(SourceFile:56)
	at civ.a(SourceFile:35)
	at civ.a(SourceFile:17)
	at cja.a(SourceFile:44)
	at cow.a(SourceFile:82)
	at csr.a(SourceFile:83)
	at csr.a(SourceFile:79)
	at csy.a(SourceFile:75)
	at bqd.a(SourceFile:560)
	at bqd$$Lambda$4994/1064374294.accept(Unknown Source)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at it.unimi.dsi.fastutil.longs.LongIterator$$Lambda$4989/124324524.accept(Unknown Source)
	at java.util.PrimitiveIterator$OfLong.forEachRemaining(PrimitiveIterator.java:189)
	at it.unimi.dsi.fastutil.longs.LongIterator.forEachRemaining(LongIterator.java:53)
	at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502)
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)

-- Feature --
Details:
	Id: minecraft:village
	Description: clq@5f6dd89c
Stacktrace:
	at bqd.a(SourceFile:559)

-- Generation --
Details:
	CenterX: 45
	CenterZ: -44
	Step: SURFACE_STRUCTURES
	Seed: -3544363227096265383
	Biome: minecraft:taiga
Stacktrace:
	at cga.a(SourceFile:210)
	at cgc.c(SourceFile:84)
	at cgc$$Lambda$1663/715224798.doWork(Unknown Source)
	at cgc.a(SourceFile:214)

-- Chunk to be generated --
Details:
	Location: 45,-44
	Position hash: -188978560979
	Generator: cho@1ac2d524
Stacktrace:
	at yi.a(SourceFile:569)
	at yi$$Lambda$4027/1435700071.apply(Unknown Source)
	at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
	at yi.a(SourceFile:563)
	at yi$$Lambda$4024/1070389635.apply(Unknown Source)
	at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:952)
	at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:926)
	at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442)
	at yk.b(SourceFile:58)
	at yk$$Lambda$3936/360602807.run(Unknown Source)
	at amc.e(SourceFile:94)
	at amc.a(SourceFile:137)
	at amc.run(SourceFile:105)

-- Affected level --
Details:
	All players: 1 total; [yx['lallikus'/75, l='ServerLevel[MC VAN]', x=487.52, y=73.62, z=-439.72]]
	Chunk stats: ServerChunkCache: 4857
	Level dimension: minecraft:overworld
	Level spawn location: World: (-48,76,224), Chunk: (at 0,4,0 in -3,14; contains blocks -48,0,224 to -33,255,239), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 468049 game time, 721086 day time
	Level name: MC VAN
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
	Level weather: Rain time: 132203 (now: false), thunder time: 171657 (now: false)
	Known server brands: vanilla
	Level was modded: false
	Level storage version: 0x04ABD - Anvil
Stacktrace:
	at net.minecraft.server.MinecraftServer.b(SourceFile:896)
	at net.minecraft.server.MinecraftServer.a(SourceFile:832)
	at enr.a(SourceFile:89)
	at net.minecraft.server.MinecraftServer.run(SourceFile:691)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 20w21a
	Minecraft Version ID: 20w21a
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 770425720 bytes (734 MB) / 2147483648 bytes (2048 MB) up to 2147483648 bytes (2048 MB)
	CPUs: 4
	JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	Player Count: 1 / 8; [yx['lallikus'/75, l='ServerLevel[MC VAN]', x=487.52, y=73.62, z=-439.72]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.