Minecraft /kill @e[type=Item] didnt work

---- Minecraft Crash Report ----
// My bad.

Time: 12/5/15 9:52 AM
Description: Executing command block

java.lang.NullPointerException: Executing command block
at adc.a(SourceFile:97)
at afw.b(SourceFile:54)
at le.a(SourceFile:526)
at le.c(SourceFile:199)
at net.minecraft.server.MinecraftServer.B(SourceFile:599)
at net.minecraft.server.MinecraftServer.A(SourceFile:535)
at bpo.A(SourceFile:152)
at net.minecraft.server.MinecraftServer.run(SourceFile:451)
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 --
Stacktrace:
at adc.a(SourceFile:97)

-- Command to be executed --
Details:
Command:- /kill @e[type=Item]

Name: KillItems
Stacktrace:
at adc.a(SourceFile:97)
at afw.b(SourceFile:54)

-- Block being ticked --
Details:
Block: minecraft:command_block[triggered=true]
Block location: World: (17,4,3), Chunk: (at 1,0,3 in 1,0; contains blocks 16,0,0 to 31,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Stacktrace:
at le.a(SourceFile:526)
at le.c(SourceFile:199)

-- Affected level --
Details:
Level name: 100 ways to die map v2.0 _New Map_ ! -1.9- *1.8*
All players: 0 total; []
Chunk stats: ServerChunkCache: 793 Drop: 317
Level seed: 7048982898766036690
Level generator: ID 01 - flat, ver 0. Features enabled: true
Level generator options: 3;;1;village
Level spawn location: 50.00,6.00,50.00 - World: (50,6,50), Chunk: (at 2,0,2 in 3,3; contains blocks 48,0,48 to 63,255,63), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 185397 game time, 1000 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 170497 (now: false), thunder time: 75304 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.MinecraftServer.B(SourceFile:599)
at net.minecraft.server.MinecraftServer.A(SourceFile:535)
at bpo.A(SourceFile:152)
at net.minecraft.server.MinecraftServer.run(SourceFile:451)
at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
Minecraft Version: 1.8.8
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 148975024 bytes (142 MB) / 303607808 bytes (289 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: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.