---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 5/15/18 9:33 PM
Description: Exception generating new chunk

java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException: bound must be positive
	at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2237)
	at si.c(SourceFile:130)
	at sq.a(SourceFile:84)
	at sr.c(SourceFile:143)
	at sj.i_(SourceFile:223)
	at net.minecraft.server.MinecraftServer.w(SourceFile:689)
	at net.minecraft.server.MinecraftServer.v(SourceFile:622)
	at dhq.v(SourceFile:156)
	at net.minecraft.server.MinecraftServer.run(SourceFile:527)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: bound must be positive
	at java.util.Random.nextInt(Random.java:388)
	at bzs.a(SourceFile:203)
	at bzu.a(SourceFile:186)
	at bzu.a(SourceFile:182)
	at bzj.a(SourceFile:59)
	at byz$a.a(SourceFile:266)
	at bzh.a(SourceFile:60)
	at bvq.a(SourceFile:90)
	at bxw.a(SourceFile:16)
	at bxw.a(SourceFile:13)
	at brt.a(SourceFile:27)
	at bbv.a(SourceFile:515)
	at bpg.a(SourceFile:109)
	at sx.a(SourceFile:12)
	at sw.a(SourceFile:33)
	at bpk.a(SourceFile:85)
	at tc.a(SourceFile:59)
	at tc.a(SourceFile:23)
	at agd$a.a(SourceFile:143)
	at agd$a$$Lambda$1392/719049937.apply(Unknown Source)
	at java.util.concurrent.CompletableFuture$AsyncApply.exec(CompletableFuture.java:501)
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:902)
	at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1689)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1644)
	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 si.a(SourceFile:180)

-- Chunk to be generated --
Details:
	Location: 4,-12
	Position hash: -51539607548
	Generator: bqz@393113c1
Stacktrace:
	at si.a(SourceFile:180)
	at si.c(SourceFile:133)
	at sq.a(SourceFile:84)
	at sr.c(SourceFile:143)
	at sj.i_(SourceFile:223)
	at net.minecraft.server.MinecraftServer.w(SourceFile:689)
	at net.minecraft.server.MinecraftServer.v(SourceFile:622)
	at dhq.v(SourceFile:156)
	at net.minecraft.server.MinecraftServer.run(SourceFile:527)
	at java.lang.Thread.run(Thread.java:745)

-- Affected level --
Details:
	Level name: 20180515
	All players: 1 total; [sl['pocococo'/193, l='20180515', x=-5.61, y=70.00, z=29.30]]
	Chunk stats: ServerChunkCache: 691 Drop: 0
	Level seed: -3573814383023018062
	Level generator: ID 05 - buffet, ver 0. Features enabled: true
	Level generator options: {"biome_source":{"type":"minecraft:fixed","options":{"biomes":["minecraft:ocean"]}},"chunk_generator":{"type":"minecraft:caves","options":{"default_block":"minecraft:stone","default_fluid":"minecraft:water"}}}
	Level spawn location: World: (0,72,26), Chunk: (at 0,4,10 in 0,1; contains blocks 0,0,16 to 15,255,31), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 42 game time, 42 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 160030 (now: false), thunder time: 41002 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false

-- System Details --
Details:
	Minecraft Version: 18w20a
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 2967043264 bytes (2829 MB) / 4141350912 bytes (3949 MB) up to 4141350912 bytes (3949 MB)
	JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms4G -Xmx4G
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [sl['pocococo'/193, l='20180515', x=-5.61, y=70.00, z=29.30]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.