---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 10/01/18 20:57
Description: Ticking entity

java.lang.IllegalArgumentException: Cannot get property bct{name=open, clazz=class java.lang.Boolean, values=[true, false]} as it does not exist in bci{block=minecraft:air, properties=[]}
	at bci$a.c(SourceFile:144)
	at abv.f(SourceFile:27)
	at abt.b(SourceFile:40)
	at ace.a(SourceFile:136)
	at ace.a(SourceFile:83)
	at aaq.cF(SourceFile:643)
	at aap.l(SourceFile:1891)
	at aaq.l(SourceFile:503)
	at aie.l(SourceFile:42)
	at ait.l(SourceFile:217)
	at aap.G_(SourceFile:1746)
	at aaq.G_(SourceFile:283)
	at aie.G_(SourceFile:47)
	at asf.a(SourceFile:1565)
	at ro.a(SourceFile:704)
	at asf.h(SourceFile:1541)
	at asf.l(SourceFile:1423)
	at ro.l(SourceFile:537)
	at net.minecraft.server.MinecraftServer.w(SourceFile:681)
	at net.minecraft.server.MinecraftServer.v(SourceFile:606)
	at cmj.v(SourceFile:152)
	at net.minecraft.server.MinecraftServer.run(SourceFile:511)
	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 bci$a.c(SourceFile:144)
	at abv.f(SourceFile:27)
	at abt.b(SourceFile:40)
	at ace.a(SourceFile:136)
	at ace.a(SourceFile:83)
	at aaq.cF(SourceFile:643)
	at aap.l(SourceFile:1891)
	at aaq.l(SourceFile:503)
	at aie.l(SourceFile:42)
	at ait.l(SourceFile:217)
	at aap.G_(SourceFile:1746)
	at aaq.G_(SourceFile:283)
	at aie.G_(SourceFile:47)
	at asf.a(SourceFile:1565)
	at ro.a(SourceFile:704)
	at asf.h(SourceFile:1541)

-- Entity being ticked --
Details:
	Entity Type: minecraft:zombie (ait)
	Entity ID: 2498
	Entity Name: Zombie
	Entity's Exact location: 192.50, 66.00, 19.56
	Entity's Block location: World: (192,66,19), Chunk: (at 0,4,3 in 12,1; contains blocks 192,0,16 to 207,255,31), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Entity's Momentum: 0.00, -0.08, 0.03
	Entity's Passengers: []
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at asf.l(SourceFile:1423)
	at ro.l(SourceFile:537)

-- Affected level --
Details:
	Level name: 18w02a
	All players: 1 total; [rq['DelboyDylan'/158, l='18w02a', x=192.07, y=66.00, z=22.95]]
	Chunk stats: ServerChunkCache: 625 Drop: 0
	Level seed: -6549889454106593879
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (196,64,16), Chunk: (at 4,4,0 in 12,1; contains blocks 192,0,16 to 207,255,31), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 22049 game time, 18691 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 47318 (now: false), thunder time: 26803 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.w(SourceFile:681)
	at net.minecraft.server.MinecraftServer.v(SourceFile:606)
	at cmj.v(SourceFile:152)
	at net.minecraft.server.MinecraftServer.run(SourceFile:511)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 18w02a
	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: 57529368 bytes (54 MB) / 318767104 bytes (304 MB) up to 1073741824 bytes (1024 MB)
	JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [rq['DelboyDylan'/158, l='18w02a', x=192.07, y=66.00, z=22.95]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.