Strange error

[22:10:46] [main/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.RuntimeException: A severe problem occurred during the spawning of an entity at (15.417082167257364, 69.48808864893334, 14.924006566484119)
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
	at net.minecraft.util.Util.func_181617_a(SourceFile:47) [h.class:?]
	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1086) [bib.class:?]
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:397) [bib.class:?]
	at net.minecraft.client.main.Main.main(SourceFile:123) [Main.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25]
	at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25]
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
Caused by: java.lang.RuntimeException: A severe problem occurred during the spawning of an entity at (15.417082167257364, 69.48808864893334, 14.924006566484119)
	at net.minecraftforge.fml.common.network.internal.EntitySpawnHandler.spawnEntity(EntitySpawnHandler.java:134) ~[EntitySpawnHandler.class:?]
	at net.minecraftforge.fml.common.network.internal.EntitySpawnHandler.process(EntitySpawnHandler.java:63) ~[EntitySpawnHandler.class:?]
	at net.minecraftforge.fml.common.network.internal.EntitySpawnHandler.lambda$channelRead0$0(EntitySpawnHandler.java:55) ~[EntitySpawnHandler.class:?]
	at net.minecraftforge.fml.common.network.internal.EntitySpawnHandler$$Lambda$2920/226263301.run(Unknown Source) ~[?:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]
	... 9 more
Caused by: io.netty.util.IllegalReferenceCountException: refCnt: 0
	at io.netty.buffer.AbstractByteBuf.ensureAccessible(AbstractByteBuf.java:1408) ~[netty-all-4.1.9.Final.jar:4.1.9.Final]
	at io.netty.buffer.AbstractByteBuf.checkReadableBytes0(AbstractByteBuf.java:1394) ~[netty-all-4.1.9.Final.jar:4.1.9.Final]
	at io.netty.buffer.AbstractByteBuf.readByte(AbstractByteBuf.java:687) ~[netty-all-4.1.9.Final.jar:4.1.9.Final]
	at net.minecraftforge.fml.common.network.ByteBufUtils.readVarInt(ByteBufUtils.java:79) ~[ByteBufUtils.class:?]
	at net.minecraftforge.fml.common.network.ByteBufUtils.readUTF8String(ByteBufUtils.java:151) ~[ByteBufUtils.class:?]
	at lumien.randomthings.entitys.EntitySoul.readSpawnData(EntitySoul.java:194) ~[EntitySoul.class:?]
	at net.minecraftforge.fml.common.network.internal.EntitySpawnHandler.spawnEntity(EntitySpawnHandler.java:128) ~[EntitySpawnHandler.class:?]
	at net.minecraftforge.fml.common.network.internal.EntitySpawnHandler.process(EntitySpawnHandler.java:63) ~[EntitySpawnHandler.class:?]
	at net.minecraftforge.fml.common.network.internal.EntitySpawnHandler.lambda$channelRead0$0(EntitySpawnHandler.java:55) ~[EntitySpawnHandler.class:?]
	at net.minecraftforge.fml.common.network.internal.EntitySpawnHandler$$Lambda$2920/226263301.run(Unknown Source) ~[?:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
	at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]
	... 9 more