---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 26/11/19, 2:46 π.μ.
Description: Server dump

java.lang.Exception: dummy
	at net.minecraft.server.MinecraftServer.c(SourceFile:1661)
	at net.minecraft.server.MinecraftServer.a(SourceFile:1646)
	at to.c(SourceFile:92)
	at to.a(SourceFile:45)
	at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:262)
	at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:176)
	at cr.a(SourceFile:235)
	at xv.c(SourceFile:1078)
	at xv.a(SourceFile:1065)
	at pp.a(SourceFile:36)
	at pp.a(SourceFile:9)
	at lv.a(SourceFile:21)
	at tb.run(SourceFile:18)
	at aip.h(SourceFile:144)
	at ait.h(SourceFile:23)
	at aip.v(SourceFile:118)
	at net.minecraft.server.MinecraftServer.aZ(SourceFile:724)
	at net.minecraft.server.MinecraftServer.v(SourceFile:718)
	at aip.c(SourceFile:127)
	at net.minecraft.server.MinecraftServer.u(SourceFile:703)
	at net.minecraft.server.MinecraftServer.run(SourceFile:658)
	at java.base/java.lang.Thread.run(Thread.java:834)


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

-- System Details --
Details:
	Minecraft Version: 1.15 Pre-Release 2
	Minecraft Version ID: 1.15-pre2
	Operating System: Linux (amd64) version 5.0.0-36-generic
	Java Version: 11.0.4, Ubuntu
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode, sharing), Ubuntu
	Memory: 494962232 bytes (472 MB) / 1845493760 bytes (1760 MB) up to 2147483648 bytes (2048 MB)
	CPUs: 12
	JVM Flags: 8 total; -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	Player Count: 1 / 8; [xe['NikiGR'/246, l='New World', x=-221.59, y=135.11, z=140.82]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.