---- Minecraft Crash Report ----
// Oops.

Time: 9/28/16 2:09 PM
Description: Ticking block entity

java.lang.NullPointerException: Ticking block entity
	at asg.b(SourceFile:316)
	at asg.c(SourceFile:372)
	at asg.b(SourceFile:401)
	at asi.a(SourceFile:345)
	at asi.a(SourceFile:364)
	at asi.a(SourceFile:332)
	at asi.J(SourceFile:193)
	at asi.o(SourceFile:135)
	at asi.F_(SourceFile:122)
	at ajl.k(SourceFile:1429)
	at lv.k(SourceFile:549)
	at net.minecraft.server.MinecraftServer.D(SourceFile:634)
	at lg.D(SourceFile:335)
	at net.minecraft.server.MinecraftServer.C(SourceFile:562)
	at net.minecraft.server.MinecraftServer.run(SourceFile:466)
	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 asg.b(SourceFile:316)
	at asg.c(SourceFile:372)
	at asg.b(SourceFile:401)
	at asi.a(SourceFile:345)
	at asi.a(SourceFile:364)
	at asi.a(SourceFile:332)
	at asi.J(SourceFile:193)
	at asi.o(SourceFile:135)
	at asi.F_(SourceFile:122)

-- Block entity being ticked --
Details:
	Name: minecraft:hopper // asi
	Block type: ID #154 (tile.hopper // aoa)
	Block data value: 4 / 0x4 / 0b0100
	Block location: World: (-221,91,454), Chunk: (at 3,5,6 in -14,28; contains blocks -224,0,448 to -209,255,463), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Actual block type: ID #154 (tile.hopper // aoa)
	Actual block data value: 4 / 0x4 / 0b0100
Stacktrace:
	at ajl.k(SourceFile:1429)
	at lv.k(SourceFile:549)

-- Affected level --
Details:
	Level name: world
	All players: 0 total; []
	Chunk stats: ServerChunkCache: 627 Drop: 0
	Level seed: 1485249153995957408
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (-198,83,273), Chunk: (at 10,5,1 in -13,17; contains blocks -208,0,272 to -193,255,287), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 1326265776 game time, 348618221 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 522 (now: true), thunder time: 56299 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.D(SourceFile:634)
	at lg.D(SourceFile:335)
	at net.minecraft.server.MinecraftServer.C(SourceFile:562)
	at net.minecraft.server.MinecraftServer.run(SourceFile:466)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 16w39a
	Operating System: Linux (amd64) version 3.13.0-91-generic
	Java Version: 1.8.0_101, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 1091284680 bytes (1040 MB) / 2181038080 bytes (2080 MB) up to 7470055424 bytes (7124 MB)
	JVM Flags: 0 total; 
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Player Count: 0 / 20; []
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)