Hopper: java.lang.NullPointerException: Exception ticking world

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-2812970/

Crash:

java.lang.NullPointerException: Exception ticking world
	at awy.a(SourceFile:41)
	at awu.a(SourceFile:94)
	at aty.b(SourceFile:155)
	at asv.a(SourceFile:803)
	at asv.a(SourceFile:791)
	at lr.c(SourceFile:115)
	at lx.a(SourceFile:85)
	at ly.c(SourceFile:147)
	at ls.d(SourceFile:222)
	at net.minecraft.server.MinecraftServer.D(SourceFile:618)
	at net.minecraft.server.MinecraftServer.C(SourceFile:554)
	at bzl.C(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:458)
	at java.lang.Thread.run(Unknown Source)

The following is the first clean report made public about this crash:

---- Minecraft Crash Report ----
// I let you down. Sorry :(

Time: 6/8/16 3:54 PM
Description: Exception ticking world

java.lang.NullPointerException: Exception ticking world
	at awy.a(SourceFile:41)
	at awu.a(SourceFile:94)
	at aty.b(SourceFile:155)
	at asv.a(SourceFile:803)
	at asv.a(SourceFile:791)
	at lr.c(SourceFile:115)
	at lx.a(SourceFile:85)
	at ly.c(SourceFile:147)
	at ls.d(SourceFile:222)
	at net.minecraft.server.MinecraftServer.D(SourceFile:618)
	at net.minecraft.server.MinecraftServer.C(SourceFile:554)
	at bzl.C(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:458)
	at java.lang.Thread.run(Unknown Source)


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

-- Head --
Thread: Server thread
Stacktrace:
	at awy.a(SourceFile:41)
	at awu.a(SourceFile:94)
	at aty.b(SourceFile:155)
	at asv.a(SourceFile:803)
	at asv.a(SourceFile:791)
	at lr.c(SourceFile:115)
	at lx.a(SourceFile:85)
	at ly.c(SourceFile:147)
	at ls.d(SourceFile:222)

-- Affected level --
Details:
	Level name: New World
	All players: 1 total; [lu['Mc_mechanic123'/183, l='New World', x=173.50, y=4.79, z=-676.50]]
	Chunk stats: ServerChunkCache: 775 Drop: 0
	Level seed: 7423438453173048269
	Level generator: ID 01 - flat, ver 0. Features enabled: true
	Level generator options: 
	Level spawn location: World: (213,4,-812), Chunk: (at 5,0,4 in 13,-51; contains blocks 208,0,-816 to 223,255,-801), Region: (0,-2; contains chunks 0,-64 to 31,-33, blocks 0,0,-1024 to 511,255,-513)
	Level time: 7913 game time, 7913 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 70481 (now: false), thunder time: 60938 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.D(SourceFile:618)
	at net.minecraft.server.MinecraftServer.C(SourceFile:554)
	at bzl.C(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:458)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.10
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_73, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 87921624 bytes (83 MB) / 281772032 bytes (268 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [lu['Mc_mechanic123'/183, l='New World', x=173.50, y=4.79, z=-676.50]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-2812970/76598576/