---- Minecraft Crash Report ----
// You're mean.

Time: 6/26/18 4:06 PM
Description: Ticking entity

java.lang.ClassCastException: bkv cannot be cast to bgk
	at atk.j(SourceFile:640)
	at atk.b(SourceFile:386)
	at atk.S_(SourceFile:307)
	at bbz.a(SourceFile:1239)
	at sx.a(SourceFile:577)
	at bbz.g(SourceFile:1215)
	at bbz.l(SourceFile:1097)
	at sx.l(SourceFile:493)
	at net.minecraft.server.MinecraftServer.w(SourceFile:704)
	at net.minecraft.server.MinecraftServer.v(SourceFile:630)
	at djg.v(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:535)
	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 atk.j(SourceFile:640)
	at atk.b(SourceFile:386)
	at atk.S_(SourceFile:307)
	at bbz.a(SourceFile:1239)
	at sx.a(SourceFile:577)
	at bbz.g(SourceFile:1215)

-- Entity being ticked --
Details:
	Entity Type: minecraft:minecart (atn)
	Entity ID: 40874
	Entity Name: Minecart
	Entity's Exact location: -130.50, 63.06, -131.50
	Entity's Block location: World: (-131,63,-132), Chunk: (at 13,3,12 in -9,-9; contains blocks -144,0,-144 to -129,255,-129), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
	Entity's Momentum: 0.00, -0.04, 0.00
	Entity's Passengers: []
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at bbz.l(SourceFile:1097)
	at sx.l(SourceFile:493)

-- Affected level --
Details:
	Level name: New World
	All players: 1 total; [sz[' '/40512, l='New World', x=-131.31, y=63.00, z=-129.87]]
	Chunk stats: ServerChunkCache: 537 Drop: 0
	Level seed: -9144014475768710727
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (-176,64,0), Chunk: (at 0,4,0 in -11,0; contains blocks -176,0,0 to -161,255,15), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 961816 game time, 6000 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.w(SourceFile:704)
	at net.minecraft.server.MinecraftServer.v(SourceFile:630)
	at djg.v(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:535)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 1.13-pre4
	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: 540286752 bytes (515 MB) / 1060372480 bytes (1011 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 7 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [sz[' '/40512, l='New World', x=-131.31, y=63.00, z=-129.87]]
	Data Packs: vanilla, file/packname (incompatible)
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.