---- Minecraft Crash Report ----
// There are four lights!

Time: 16.10.19 21:20
Description: Server dump

java.lang.Exception: dummy
	at net.minecraft.server.MinecraftServer.c(SourceFile:1655)
	at net.minecraft.server.MinecraftServer.a(SourceFile:1640)
	at tl.c(SourceFile:92)
	at tl.a(SourceFile:45)
	at tl$$Lambda$2361/872348606.run(Unknown Source)
	at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:262)
	at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:176)
	at co.a(SourceFile:233)
	at xs.c(SourceFile:1077)
	at xs.a(SourceFile:1064)
	at pm.a(SourceFile:36)
	at pm.a(SourceFile:9)
	at ls.a(SourceFile:21)
	at ls$$Lambda$3349/985350527.run(Unknown Source)
	at sy.run(SourceFile:18)
	at ail.h(SourceFile:144)
	at aip.h(SourceFile:23)
	at ail.v(SourceFile:118)
	at net.minecraft.server.MinecraftServer.aZ(SourceFile:720)
	at net.minecraft.server.MinecraftServer.v(SourceFile:714)
	at ail.c(SourceFile:127)
	at net.minecraft.server.MinecraftServer.u(SourceFile:699)
	at net.minecraft.server.MinecraftServer.run(SourceFile:654)
	at java.lang.Thread.run(Thread.java:745)


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

-- System Details --
Details:
	Minecraft Version: 19w42a
	Minecraft Version ID: 19w42a
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 631642552 bytes (602 MB) / 2147483648 bytes (2048 MB) up to 2147483648 bytes (2048 MB)
	CPUs: 4
	JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	Player Count: 1 / 8; [xb['Shiwakehe'/401, l='TEST 19W42A', x=-102.96, y=64.00, z=112.31]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.