[18:56:27] [Server thread/ERROR]: "Silently" catching entity tracking error.
net.minecraft.util.ReportedException: Adding entity to track
	at net.minecraft.entity.EntityTracker.func_72785_a(EntityTracker.java:234) [mn.class:?]
	at cpw.mods.fml.common.registry.EntityRegistry.tryTrackingEntity(EntityRegistry.java:404) [EntityRegistry.class:1.7.10-R0.1-SNAPSHOT]
	at net.minecraft.entity.EntityTracker.func_72786_a(EntityTracker.java:62) [mn.class:?]
	at net.minecraft.world.WorldManager.func_72703_a(WorldManager.java:28) [mp.class:?]
	at net.minecraft.world.World.func_72923_a(World.java:1832) [ahb.class:?]
	at net.minecraft.world.WorldServer.func_72923_a(WorldServer.java:1051) [mt.class:?]
	at net.minecraft.world.World.func_72868_a(World.java:3996) [ahb.class:?]
	at net.minecraft.world.chunk.Chunk.func_76631_c(Chunk.java:1052) [apx.class:?]
	at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:49) [ChunkIOProvider.class:1.7.10-R0.1-SNAPSHOT]
	at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:15) [ChunkIOProvider.class:1.7.10-R0.1-SNAPSHOT]
	at net.minecraftforge.common.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:344) [AsynchronousExecutor.class:1.7.10-R0.1-SNAPSHOT]
	at net.minecraftforge.common.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:302) [AsynchronousExecutor.class:1.7.10-R0.1-SNAPSHOT]
	at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:12) [ChunkIOExecutor.class:1.7.10-R0.1-SNAPSHOT]
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:197) [ms.class:?]
	at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:170) [ms.class:?]
	at net.minecraft.world.World.func_72903_x(World.java:3413) [ahb.class:?]
	at net.minecraft.world.World.func_147456_g(World.java:3529) [ahb.class:?]
	at net.minecraft.world.WorldServer.func_147456_g(WorldServer.java:445) [mt.class:?]
	at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:288) [mt.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:931) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:431) [lt.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:809) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:669) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
Caused by: java.lang.IllegalStateException: Entity is already tracked!
	at net.minecraft.entity.EntityTracker.func_72785_a(EntityTracker.java:198) ~[mn.class:?]
	... 23 more