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

Time: 2/24/19 3:33 PM
Description: Exception in server tick loop

java.util.concurrent.CompletionException: j: Writing into PalettedContainer from multiple threads
	at java.util.concurrent.CompletableFuture.encodeThrowable(Unknown Source)
	at java.util.concurrent.CompletableFuture.completeThrowable(Unknown Source)
	at java.util.concurrent.CompletableFuture.uniCompose(Unknown Source)
	at java.util.concurrent.CompletableFuture$UniCompose.tryFire(Unknown Source)
	at java.util.concurrent.CompletableFuture$Completion.run(Unknown Source)
	at uk.b(SourceFile:57)
	at afr.f(SourceFile:83)
	at afr.a(SourceFile:123)
	at afr.run(SourceFile:91)
	at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(Unknown Source)
	at java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(Unknown Source)
	at java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
	at java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)
Caused by: j: Writing into PalettedContainer from multiple threads
	at ui.a(SourceFile:417)
	at com.mojang.datafixers.util.Either$Left.map(Either.java:38)
	at ui.a(SourceFile:400)
	... 12 more
Caused by: java.lang.IllegalStateException
	at btl.a(SourceFile:42)
	at btl.a(SourceFile:109)
	at btf.a(SourceFile:60)
	at btf.a(SourceFile:54)
	at btm.a(SourceFile:178)
	at cfe.a(SourceFile:74)
	at cfe.a(SourceFile:21)
	at cfe.a(SourceFile:14)
	at cfd.a(SourceFile:35)
	at bec.a(SourceFile:407)
	at bun.c(SourceFile:238)
	at bsx.f(SourceFile:54)
	at bsx$c.doWork(SourceFile:220)
	at bsx.a(SourceFile:184)
	at ui.a(SourceFile:406)
	... 14 more


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 19w08b
	Operating System: Linux (amd64) version 2.6.32-696.18.7.el6.x86_64
	Java Version: 1.8.0_111, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 2730177912 bytes (2603 MB) / 4151836672 bytes (3959 MB) up to 4151836672 bytes (3959 MB)
	JVM Flags: 5 total; -Xmx4096M -Xms4096M -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled -XX:MaxMetaspaceSize=128M
	Player Count: 1 / 70; [uw['Dr_Wub_Wubz'/4600310, l='MainWorld', x=2617.33, y=67.00, z=-1476.93]]
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)