[08:03:39] [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:246) ~[lp.class:?]
	at net.minecraftforge.fml.common.registry.EntityRegistry.tryTrackingEntity(EntityRegistry.java:360) ~[EntityRegistry.class:?]
	at net.minecraft.entity.EntityTracker.func_72786_a(EntityTracker.java:78) ~[lp.class:?]
	at net.minecraft.world.ServerWorldEventHandler.func_72703_a(ServerWorldEventHandler.java:33) ~[lt.class:?]
	at net.minecraft.world.World.func_72923_a(World.java:1142) ~[aid.class:?]
	at net.minecraft.world.WorldServer.func_72923_a(WorldServer.java:1117) ~[ls.class:?]
	at net.minecraft.world.WorldServer.onSpongeEntityAdded(WorldServer.java:1367) ~[ls.class:?]
	at net.minecraft.world.WorldServer.forceSpawnEntity(WorldServer.java:1413) ~[ls.class:?]
	at net.minecraft.world.WorldServer.forceSpawnEntity(WorldServer.java:1396) ~[ls.class:?]
	at org.spongepowered.common.event.tracking.phase.tick.TileEntityTickPhaseState.lambda$processPostTick$2(TileEntityTickPhaseState.java:137) ~[TileEntityTickPhaseState.class:1.10.2-2092-5.0.0-BETA-1787]
	at org.spongepowered.common.event.tracking.CapturedSupplier.ifPresentAndNotEmpty(CapturedSupplier.java:57) [CapturedSupplier.class:1.10.2-2092-5.0.0-BETA-1787]
	at org.spongepowered.common.event.tracking.phase.tick.TileEntityTickPhaseState.processPostTick(TileEntityTickPhaseState.java:87) [TileEntityTickPhaseState.class:1.10.2-2092-5.0.0-BETA-1787]
	at org.spongepowered.common.event.tracking.phase.tick.TickPhase.unwind(TickPhase.java:67) [TickPhase.class:1.10.2-2092-5.0.0-BETA-1787]
	at org.spongepowered.common.event.tracking.CauseTracker.completePhase(CauseTracker.java:186) [CauseTracker.class:1.10.2-2092-5.0.0-BETA-1787]
	at org.spongepowered.common.event.tracking.TrackingUtil.tickTileEntity(TrackingUtil.java:196) [TrackingUtil.class:1.10.2-2092-5.0.0-BETA-1787]
	at net.minecraft.world.WorldServer.redirect$onUpdateTileEntities$0(WorldServer.java:1290) [ls.class:?]
	at net.minecraft.world.World.func_72939_s(World.java:1255) [aid.class:?]
	at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:709) [ls.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:709) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:387) [ld.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]
Caused by: java.lang.IllegalStateException: Entity is already tracked for world: world
	at net.minecraft.entity.EntityTracker.func_72785_a(EntityTracker.java:214) ~[lp.class:?]
	... 22 more
[08:03:39] [Server thread/ERROR]: "Silently" catching entity tracking error.
net.minecraft.util.ReportedException: Adding entity to track
	at net.minecraft.entity.EntityTracker.func_72785_a(EntityTracker.java:246) ~[lp.class:?]
	at net.minecraftforge.fml.common.registry.EntityRegistry.tryTrackingEntity(EntityRegistry.java:360) ~[EntityRegistry.class:?]
	at net.minecraft.entity.EntityTracker.func_72786_a(EntityTracker.java:78) ~[lp.class:?]
	at net.minecraft.world.ServerWorldEventHandler.func_72703_a(ServerWorldEventHandler.java:33) ~[lt.class:?]
	at net.minecraft.world.World.func_72923_a(World.java:1142) ~[aid.class:?]
	at net.minecraft.world.WorldServer.func_72923_a(WorldServer.java:1117) ~[ls.class:?]
	at net.minecraft.world.WorldServer.onSpongeEntityAdded(WorldServer.java:1367) ~[ls.class:?]
	at net.minecraft.world.WorldServer.forceSpawnEntity(WorldServer.java:1413) ~[ls.class:?]
	at net.minecraft.world.WorldServer.forceSpawnEntity(WorldServer.java:1396) ~[ls.class:?]
	at org.spongepowered.common.event.tracking.phase.tick.TileEntityTickPhaseState.lambda$processPostTick$2(TileEntityTickPhaseState.java:137) ~[TileEntityTickPhaseState.class:1.10.2-2092-5.0.0-BETA-1787]
	at org.spongepowered.common.event.tracking.CapturedSupplier.ifPresentAndNotEmpty(CapturedSupplier.java:57) [CapturedSupplier.class:1.10.2-2092-5.0.0-BETA-1787]
	at org.spongepowered.common.event.tracking.phase.tick.TileEntityTickPhaseState.processPostTick(TileEntityTickPhaseState.java:87) [TileEntityTickPhaseState.class:1.10.2-2092-5.0.0-BETA-1787]
	at org.spongepowered.common.event.tracking.phase.tick.TickPhase.unwind(TickPhase.java:67) [TickPhase.class:1.10.2-2092-5.0.0-BETA-1787]
	at org.spongepowered.common.event.tracking.CauseTracker.completePhase(CauseTracker.java:186) [CauseTracker.class:1.10.2-2092-5.0.0-BETA-1787]
	at org.spongepowered.common.event.tracking.TrackingUtil.tickTileEntity(TrackingUtil.java:196) [TrackingUtil.class:1.10.2-2092-5.0.0-BETA-1787]
	at net.minecraft.world.WorldServer.redirect$onUpdateTileEntities$0(WorldServer.java:1290) [ls.class:?]
	at net.minecraft.world.World.func_72939_s(World.java:1255) [aid.class:?]
	at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:709) [ls.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:709) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:387) [ld.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]
Caused by: java.lang.IllegalStateException: Entity is already tracked for world: world
	at net.minecraft.entity.EntityTracker.func_72785_a(EntityTracker.java:214) ~[lp.class:?]
	... 22 more