---- Minecraft Crash Report ----
// You should try our sister game, Minceraft!

Time: 15.05.18 17:47
Description: Exception in server tick loop

java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.IndexOutOfBoundsException: Index (0) is greater than or equal to list size (0)
	at net.minecraft.server.MinecraftServer.g_(SourceFile:390)
	at dhq.a(SourceFile:116)
	at dhq.d(SourceFile:132)
	at net.minecraft.server.MinecraftServer.run(SourceFile:497)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.concurrent.ExecutionException: java.lang.IndexOutOfBoundsException: Index (0) is greater than or equal to list size (0)
	at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2272)
	at net.minecraft.server.MinecraftServer.g_(SourceFile:388)
	... 4 more
Caused by: java.lang.IndexOutOfBoundsException: Index (0) is greater than or equal to list size (0)
	at it.unimi.dsi.fastutil.longs.LongArrayList.removeLong(LongArrayList.java:346)
	at it.unimi.dsi.fastutil.longs.LongArrayList.rem(LongArrayList.java:357)
	at it.unimi.dsi.fastutil.longs.AbstractLongList.remove(AbstractLongList.java:455)
	at bze.c(SourceFile:35)
	at bvq.a(SourceFile:308)
	at bvq.a(SourceFile:235)
	at bvq.a(SourceFile:80)
	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$1412/876805550.apply(Unknown Source)
	at java.util.concurrent.CompletableFuture$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:
---------------------------------------------------------------------------------------

-- 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: 662211616 bytes (631 MB) / 905969664 bytes (864 MB) up to 5368709120 bytes (5120 MB)
	JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx5G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.