---- Minecraft Crash Report ----
// But it works on my machine.

Time: 12.02.18 13:43
Description: Exception generating new chunk

java.util.concurrent.ExecutionException: java.lang.RuntimeException: Not yet implemented
	at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2237)
	at rz.c(SourceFile:130)
	at atm.c(SourceFile:311)
	at atm.a(SourceFile:946)
	at sa.a(SourceFile:924)
	at uk.c(SourceFile:345)
	at uk.a(SourceFile:170)
	at sz.b(SourceFile:120)
	at sz.aa_(SourceFile:67)
	at hg.a(SourceFile:221)
	at sw.c(SourceFile:175)
	at net.minecraft.server.MinecraftServer.w(SourceFile:721)
	at net.minecraft.server.MinecraftServer.v(SourceFile:628)
	at cvl.v(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:533)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: Not yet implemented
	at sf.a(SourceFile:350)
	at aze.a(SourceFile:105)
	at bfj.a(SourceFile:242)
	at axn.a(SourceFile:216)
	at bpl.a(SourceFile:211)
	at bpl.a(SourceFile:179)
	at bpc.a(SourceFile:59)
	at bpa.a(SourceFile:57)
	at bmn$a.a(SourceFile:130)
	at bly.a(SourceFile:92)
	at bny.a(SourceFile:16)
	at bny.a(SourceFile:13)
	at bit.a(SourceFile:27)
	at aud.a(SourceFile:416)
	at bif.b(SourceFile:122)
	at sn.a(SourceFile:13)
	at sm.a(SourceFile:34)
	at bgq.a(SourceFile:89)
	at sr.a(SourceFile:54)
	at sr.a(SourceFile:23)
	at zo$a.a(SourceFile:143)
	at zo$a$$Lambda$942/95486360.apply(Unknown Source)
	at java.util.concurrent.CompletableFuture$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 rz.a(SourceFile:180)

-- Chunk to be generated --
Details:
	Location: -50,-746
	Position hash: -3199750635570
	Generator: bif@7eee69e7
Stacktrace:
	at rz.a(SourceFile:180)
	at rz.c(SourceFile:133)
	at atm.c(SourceFile:311)
	at atm.a(SourceFile:946)
	at sa.a(SourceFile:924)
	at uk.c(SourceFile:345)
	at uk.a(SourceFile:170)
	at sz.b(SourceFile:120)
	at sz.aa_(SourceFile:67)
	at hg.a(SourceFile:221)
	at sw.c(SourceFile:175)
	at net.minecraft.server.MinecraftServer.w(SourceFile:721)
	at net.minecraft.server.MinecraftServer.v(SourceFile:628)
	at cvl.v(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:533)
	at java.lang.Thread.run(Thread.java:745)

-- Ticking connection --
Details:
	Connection: hg@32a38304

-- System Details --
Details:
	Minecraft Version: 18w06a
	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: 111271680 bytes (106 MB) / 344645632 bytes (328 MB) up to 4281597952 bytes (4083 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4096M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [sc['NeunEinser'/198, l='Copy of Spawn', x=-790,50, y=136,80, z=-11926,50]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.