---- Minecraft Crash Report ----
// Why did you do that?

Time: 19/07/2020, 12:36
Description: Exception generating new chunk

java.util.ConcurrentModificationException
	at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134)
	at cva.b(SourceFile:64)
	at cva.a(SourceFile:54)
	at ctv$a.a(SourceFile:105)
	at ctv$a.<init>(SourceFile:85)
	at ctv.a(SourceFile:70)
	at cmc$a.a(SourceFile:34)
	at cmc$a.a(SourceFile:24)
	at cml.a(SourceFile:249)
	at ckc.a(SourceFile:27)
	at cha.a(SourceFile:268)
	at cha.a(SourceFile:259)
	at chc.d(SourceFile:51)
	at chc.a(SourceFile:219)
	at yp.a(SourceFile:568)
	at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
	at yp.a(SourceFile:562)
	at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072)
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478)
	at yr.b(SourceFile:58)
	at amq.e(SourceFile:94)
	at amq.a(SourceFile:137)
	at amq.run(SourceFile:105)
	at java.base/java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1426)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:177)


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

-- Head --
Thread: Server thread
Stacktrace:
	at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134)
	at cva.b(SourceFile:64)
	at cva.a(SourceFile:54)
	at ctv$a.a(SourceFile:105)
	at ctv$a.<init>(SourceFile:85)
	at ctv.a(SourceFile:70)
	at cmc$a.a(SourceFile:34)
	at cmc$a.a(SourceFile:24)
	at cml.a(SourceFile:249)
	at ckc.a(SourceFile:27)
	at cha.a(SourceFile:268)
	at cha.a(SourceFile:259)
	at chc.d(SourceFile:51)
	at chc.a(SourceFile:219)

-- Chunk to be generated --
Details:
	Location: 2,-35
	Position hash: -150323855358
	Generator: cip@15bc26b6
Stacktrace:
	at yp.a(SourceFile:568)
	at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
	at yp.a(SourceFile:562)
	at java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072)
	at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478)
	at yr.b(SourceFile:58)
	at amq.e(SourceFile:94)
	at amq.a(SourceFile:137)
	at amq.run(SourceFile:105)

-- Affected level --
Details:
	All players: 1 total; [ze['Tofun'/87, l='ServerLevel[world]', x=175.57, y=63.00, z=-262.10]]
	Chunk stats: ServerChunkCache: 2114
	Level dimension: minecraft:overworld
	Level spawn location: World: (176,63,-256), Chunk: (at 0,3,0 in 11,-16; contains blocks 176,0,-256 to 191,255,-241), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Level time: 1049789 game time, 1225145 day time
	Level name: world
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
	Level weather: Rain time: 149123 (now: false), thunder time: 84239 (now: false)
	Known server brands: vanilla
	Level was modded: false
	Level storage version: 0x04ABD - Anvil
Stacktrace:
	at net.minecraft.server.MinecraftServer.b(SourceFile:876)
	at yd.b(SourceFile:306)
	at net.minecraft.server.MinecraftServer.a(SourceFile:813)
	at net.minecraft.server.MinecraftServer.v(SourceFile:672)
	at net.minecraft.server.MinecraftServer.a(SourceFile:256)
	at java.base/java.lang.Thread.run(Thread.java:834)

-- System Details --
Details:
	Minecraft Version: 1.16.1
	Minecraft Version ID: 1.16.1
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 11.0.1, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 617588960 bytes (588 MB) / 1073741824 bytes (1024 MB) up to 1073741824 bytes (1024 MB)
	CPUs: 8
	JVM Flags: 2 total; -Xmx1024M -Xms1024M
	Player Count: 1 / 5; [ze['Tofun'/87, l='ServerLevel[world]', x=175.57, y=63.00, z=-262.10]]
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)