---- Minecraft Crash Report ----
// Don't do that.

Time: 20.06.18 0:28
Description: Ticking memory connection

java.lang.IllegalStateException: Not a JSON Object: null
	at com.google.gson.JsonElement.getAsJsonObject(JsonElement.java:90)
	at vy.a(SourceFile:81)
	at vy.<init>(SourceFile:47)
	at uz.a(SourceFile:923)
	at sp.<init>(SourceFile:160)
	at uz.g(SourceFile:443)
	at to.b(SourceFile:118)
	at to.Z_(SourceFile:65)
	at hv.a(SourceFile:221)
	at tl.c(SourceFile:175)
	at net.minecraft.server.MinecraftServer.w(SourceFile:719)
	at net.minecraft.server.MinecraftServer.v(SourceFile:626)
	at dir.v(SourceFile:156)
	at net.minecraft.server.MinecraftServer.run(SourceFile:531)
	at java.lang.Thread.run(Thread.java:745)


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

-- Head --
Thread: Server thread
Stacktrace:
	at com.google.gson.JsonElement.getAsJsonObject(JsonElement.java:90)
	at vy.a(SourceFile:81)
	at vy.<init>(SourceFile:47)
	at uz.a(SourceFile:923)
	at sp.<init>(SourceFile:160)
	at uz.g(SourceFile:443)
	at to.b(SourceFile:118)
	at to.Z_(SourceFile:65)
	at hv.a(SourceFile:221)

-- Ticking connection --
Details:
	Connection: hv@26bf3464
Stacktrace:
	at tl.c(SourceFile:175)
	at net.minecraft.server.MinecraftServer.w(SourceFile:719)
	at net.minecraft.server.MinecraftServer.v(SourceFile:626)
	at dir.v(SourceFile:156)
	at net.minecraft.server.MinecraftServer.run(SourceFile:531)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 1.13-pre2
	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: 143479464 bytes (136 MB) / 369098752 bytes (352 MB) up to 1073741824 bytes (1024 MB)
	JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx1G -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.