error

WARN The main thread failed to respond after 10 seconds
WARN Probable Plugin cause: 'AutoSaveWorld'
WARN What follows is the stack trace of the main thread
WARN at java.util.zip.Deflater.deflateBytes(Native Method)
WARN at java.util.zip.Deflater.deflate(Deflater.java:427)
WARN at java.util.zip.Deflater.deflate(Deflater.java:350)
WARN at java.util.zip.DeflaterOutputStream.deflate(DeflaterOutputStream.java:251)
WARN at java.util.zip.DeflaterOutputStream.write(DeflaterOutputStream.java:211)
WARN at java.util.zip.GZIPOutputStream.write(GZIPOutputStream.java:146)
WARN at java.io.DataOutputStream.write(DataOutputStream.java:107)
WARN at java.io.DataOutputStream.writeUTF(DataOutputStream.java:401)
WARN at java.io.DataOutputStream.writeUTF(DataOutputStream.java:323)
WARN at net.minecraft.server.v1_7_R1.NBTTagCompound.a(SourceFile:312)
WARN at net.minecraft.server.v1_7_R1.NBTTagCompound.write(SourceFile:23)
WARN at net.minecraft.server.v1_7_R1.NBTTagList.write(SourceFile:21)
WARN at net.minecraft.server.v1_7_R1.NBTTagCompound.a(SourceFile:314)
WARN at net.minecraft.server.v1_7_R1.NBTTagCompound.write(SourceFile:23)
WARN at net.minecraft.server.v1_7_R1.NBTTagCompound.a(SourceFile:314)
WARN at net.minecraft.server.v1_7_R1.NBTTagCompound.write(SourceFile:23)
WARN at net.minecraft.server.v1_7_R1.NBTTagCompound.a(SourceFile:314)
WARN at net.minecraft.server.v1_7_R1.NBTTagCompound.write(SourceFile:23)
WARN at net.minecraft.server.v1_7_R1.NBTTagCompound.a(SourceFile:314)
WARN at net.minecraft.server.v1_7_R1.NBTTagCompound.write(SourceFile:23)
WARN at net.minecraft.server.v1_7_R1.NBTCompressedStreamTools.a(SourceFile:94)
WARN at net.minecraft.server.v1_7_R1.NBTCompressedStreamTools.a(SourceFile:84)
WARN at net.minecraft.server.v1_7_R1.NBTCompressedStreamTools.a(SourceFile:23)
WARN at net.minecraft.server.v1_7_R1.PersistentCollection.a(SourceFile:93)
WARN at net.minecraft.server.v1_7_R1.PersistentCollection.a(SourceFile:75)
WARN at net.minecraft.server.v1_7_R1.WorldServer.a(WorldServer.java:782)