[13:21:28] [Server thread/WARN]: java.lang.NullPointerException
[13:21:28] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.Village.a(Village.java:394)
[13:21:28] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.PersistentVillage.a(SourceFile:215)
[13:21:28] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.PersistentCollection.get(PersistentCollection.java:50)
[13:21:28] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.WorldServer.b(WorldServer.java:72)
[13:21:28] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.a(MinecraftServer.java:268)
[13:21:28] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.DedicatedServer.init(DedicatedServer.java:269)
[13:21:28] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:522)
[13:21:28] [Server thread/WARN]: 	at java.lang.Thread.run(Thread.java:745)

[13:21:29] [Server thread/INFO]: Attempted to place a tile entity (net.minecraft.server.v1_9_R1.TileEntitySkull@2dbd79e5) at 0,0,0 (BEDROCK) where there was no entity tile!
[13:21:29] [Server thread/INFO]: Chunk coordinates: 3152,0
[13:21:29] [Server thread/WARN]: java.lang.Exception
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.Chunk.a(Chunk.java:724)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.Chunk.a(Chunk.java:702)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.ChunkRegionLoader.loadEntities(ChunkRegionLoader.java:373)
[13:21:29] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:42)
[13:21:29] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:1)
[13:21:29] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:337)
[13:21:29] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:295)
[13:21:29] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:16)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:131)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:113)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.l(MinecraftServer.java:367)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.a(MinecraftServer.java:331)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.DedicatedServer.init(DedicatedServer.java:269)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:522)
[13:21:29] [Server thread/WARN]: 	at java.lang.Thread.run(Thread.java:745)

[13:21:29] [Server thread/INFO]: Attempted to place a tile entity (net.minecraft.server.v1_9_R1.TileEntitySkull@76f7ec77) at 0,0,0 (BEDROCK) where there was no entity tile!
[13:21:29] [Server thread/INFO]: Chunk coordinates: 3152,0
[13:21:29] [Server thread/WARN]: java.lang.Exception
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.Chunk.a(Chunk.java:724)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.Chunk.a(Chunk.java:702)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.ChunkRegionLoader.loadEntities(ChunkRegionLoader.java:373)
[13:21:29] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:42)
[13:21:29] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:1)
[13:21:29] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:337)
[13:21:29] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:295)
[13:21:29] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:16)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:131)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:113)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.l(MinecraftServer.java:367)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.a(MinecraftServer.java:331)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.DedicatedServer.init(DedicatedServer.java:269)
[13:21:29] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:522)
[13:21:29] [Server thread/WARN]: 	at java.lang.Thread.run(Thread.java:745)

[14:01:44] [Server thread/INFO]: Attempted to place a tile entity (net.minecraft.server.v1_9_R1.TileEntitySkull@774ae3a0) at 0,0,0 (BEDROCK) where there was no entity tile!
[14:01:44] [Server thread/INFO]: Chunk coordinates: -11056,-10016
[14:01:44] [Server thread/WARN]: java.lang.Exception
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.Chunk.a(Chunk.java:724)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.Chunk.a(Chunk.java:702)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.ChunkRegionLoader.loadEntities(ChunkRegionLoader.java:373)
[14:01:44] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:42)
[14:01:44] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:1)
[14:01:44] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:337)
[14:01:44] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:295)
[14:01:44] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:16)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:131)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:113)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.World.getChunkAt(World.java:298)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.World.getChunkAtWorldCoords(World.java:294)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.World.c(World.java:625)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.World.c(World.java:597)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.World.getLightLevel(World.java:589)
[14:01:44] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.block.CraftBlock.getLightLevel(CraftBlock.java:166)
[14:01:44] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.block.CraftBlockState.<init>(CraftBlockState.java:37)
[14:01:44] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.block.CraftSign.<init>(CraftSign.java:17)
[14:01:44] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.block.CraftBlock.getState(CraftBlock.java:264)
[14:01:44] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.CraftChunk.getTileEntities(CraftChunk.java:110)
[14:01:44] [Server thread/WARN]: 	at com.sk89q.craftbook.core.st.SelfTriggeringManager.registerSelfTrigger(SelfTriggeringManager.java:30)
[14:01:44] [Server thread/WARN]: 	at com.sk89q.craftbook.bukkit.MechanicListenerAdapter$3.run(MechanicListenerAdapter.java:422)
[14:01:44] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftTask.run(CraftTask.java:71)
[14:01:44] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:724)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:655)
[14:01:44] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:554)
[14:01:44] [Server thread/WARN]: 	at java.lang.Thread.run(Thread.java:745)

[14:16:12] [Server thread/INFO]: Attempted to place a tile entity (net.minecraft.server.v1_9_R1.TileEntitySkull@17881b16) at 0,0,0 (BEDROCK) where there was no entity tile!
[14:16:12] [Server thread/INFO]: Chunk coordinates: -13936,9840
[14:16:12] [Server thread/WARN]: java.lang.Exception
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.Chunk.a(Chunk.java:724)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.Chunk.a(Chunk.java:702)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.ChunkRegionLoader.loadEntities(ChunkRegionLoader.java:373)
[14:16:12] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:42)
[14:16:12] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:1)
[14:16:12] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor$Task.finish(AsynchronousExecutor.java:188)
[14:16:12] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor$Task.get(AsynchronousExecutor.java:164)
[14:16:12] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:334)
[14:16:12] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:295)
[14:16:12] [Server thread/WARN]: 	at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:16)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:131)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:113)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.World.getChunkAt(World.java:298)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.World.getChunkAtWorldCoords(World.java:294)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.World.getType(World.java:717)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.TileEntityChest.b(TileEntityChest.java:227)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.TileEntityChest.a(TileEntityChest.java:209)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.TileEntityChest.m(TileEntityChest.java:199)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.TileEntityChest.c(TileEntityChest.java:234)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.World.tickEntities(World.java:1459)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.WorldServer.tickEntities(WorldServer.java:627)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:787)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:655)
[14:16:12] [Server thread/WARN]: 	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:554)
[14:16:12] [Server thread/WARN]: 	at java.lang.Thread.run(Thread.java:745)