`---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 11/10/16 08:36 AM
Description: Ticking entity

java.lang.NullPointerException: Ticking entity
at net.minecraft.entity.ai.EntityLookHelper.func_75651_a(SourceFile:19)
at net.minecraft.entity.ai.EntityAIAttackMelee.func_75246_d(EntityAIAttackMelee.java:95)
at net.minecraft.entity.ai.EntityAITasks.func_75774_a(SourceFile:129)
at net.minecraft.entity.EntityLiving.func_70626_be(EntityLiving.java:773)
at net.minecraft.entity.EntityLivingBase.func_70636_d(EntityLivingBase.java:2190)
at net.minecraft.entity.EntityLiving.func_70636_d(EntityLiving.java:577)
at net.minecraft.entity.monster.EntityMob.func_70636_d(SourceFile:47)
at the_fireplace.overlord.entity.EntitySkeletonWarrior.func_70636_d(EntitySkeletonWarrior.java:394)
at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:2020)
at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:295)
at net.minecraft.entity.monster.EntityMob.func_70071_h_(SourceFile:52)
at net.minecraft.world.World.func_72866_a(World.java:1964)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:838)
at net.minecraft.world.World.func_72870_g(World.java:1934)
at net.minecraft.world.World.func_72939_s(World.java:1750)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:619)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:709)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:149)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
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 net.minecraft.entity.ai.EntityLookHelper.func_75651_a(SourceFile:19)
at net.minecraft.entity.ai.EntityAIAttackMelee.func_75246_d(EntityAIAttackMelee.java:95)
at net.minecraft.entity.ai.EntityAITasks.func_75774_a(SourceFile:129)
at net.minecraft.entity.EntityLiving.func_70626_be(EntityLiving.java:773)
at net.minecraft.entity.EntityLivingBase.func_70636_d(EntityLivingBase.java:2190)
at net.minecraft.entity.EntityLiving.func_70636_d(EntityLiving.java:577)
at net.minecraft.entity.monster.EntityMob.func_70636_d(SourceFile:47)
at the_fireplace.overlord.entity.EntitySkeletonWarrior.func_70636_d(EntitySkeletonWarrior.java:394)
at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:2020)
at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:295)
at net.minecraft.entity.monster.EntityMob.func_70071_h_(SourceFile:52)
at net.minecraft.world.World.func_72866_a(World.java:1964)
at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:838)
at net.minecraft.world.World.func_72870_g(World.java:1934)

-- Entity being ticked --
Details:
Entity Type: overlord.skeleton_warrior (the_fireplace.overlord.entity.EntitySkeletonWarrior)
Entity ID: 121985
Entity Name: Skeleton Warrior
Entity's Exact location: 104,35, 4,00, -2065,69
Entity's Block location: World: (104,4,-2066), Chunk: (at 8,0,14 in 6,-130; contains blocks 96,0,-2080 to 111,255,-2065), Region: (0,-5; contains chunks 0,-160 to 31,-129, blocks 0,0,-2560 to 511,255,-2049)
Entity's Momentum: -0,08, -0,08, -0,07
Entity's Passengers: []
Entity's Vehicle: ERROR NullPointerException: null
Stacktrace:
at net.minecraft.world.World.func_72939_s(World.java:1750)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:619)

-- Affected level --
Details:
Level name: algo
All players: 1 total; [EntityPlayerMP['Guartinajo'/0, l='algo', x=110,21, y=4,00, z=-2052,72]]
Chunk stats: ServerChunkCache: 256 Drop: 0
Level seed: -2684115428169866260
Level generator: ID 01 - flat, ver 0. Features enabled: true
Level generator options:
Level spawn location: World: (119,4,-2048), Chunk: (at 7,0,0 in 7,-128; contains blocks 112,0,-2048 to 127,255,-2033), Region: (0,-4; contains chunks 0,-128 to 31,-97, blocks 0,0,-2048 to 511,255,-1537)
Level time: 3375 game time, 3375 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 156316 (now: false), thunder time: 121574 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:709)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:149)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
Minecraft Version: 1.10.2
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: 277823752 bytes (264 MB) / 610902016 bytes (582 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
FML: MCP 9.32 Powered by Forge 12.18.1.2073 4 mods loaded, 4 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAAAA mcp{9.19} Minecraft Coder Pack
UCHIJAAAA FML{8.0.99.99} Forge Mod Loader
UCHIJAAAA Forge{12.18.1.2073} Minecraft Forge
UCHIJAAAA overlord{1.1.5} Overlord
Loaded coremods (and transformers):
GL info: ERROR RuntimeException: No OpenGL context found in the current thread.
Profiler Position: N/A (disabled)
Player Count: 1 / 8; [EntityPlayerMP['Guartinajo'/0, l='algo', x=110,21, y=4,00, z=-2052,72]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'`