Error on Build 83 AllinOne

Whenever i start up the server, I get this error. Any idea why?

Caused by: java.lang.IndexOutOfBoundsException: readerIndex(1) + length(4) exceeds writerIndex(1): UnpooledHeapByteBuf(ridx: 1, widx: 1, cap: 1)
at io.netty.buffer.AbstractByteBuf.checkReadableBytes(AbstractByteBuf.java:1160)
at io.netty.buffer.AbstractByteBuf.readInt(AbstractByteBuf.java:611)
at lilypad.packet.connect.impl.KeepalivePacketCodec.decode(KeepalivePacketCodec.java:13)
at lilypad.packet.connect.impl.KeepalivePacketCodec.decode(KeepalivePacketCodec.java:6)
at lilypad.packet.common.PacketDecoder.decode(PacketDecoder.java:29)
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:232)
... 17 more
io.netty.handler.codec.DecoderException: java.lang.IndexOutOfBoundsException: readerIndex(1) + length(1) exceeds writerIndex(1): UnpooledHeapByteBuf(ridx: 1, widx: 1, cap: 1)
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:263)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:131)
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337)
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:173)
at io.netty.handler.codec.ByteToMessageCodec.channelRead(ByteToMessageCodec.java:108)
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337)
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323)
at io.netty.handler.timeout.ReadTimeoutHandler.channelRead(ReadTimeoutHandler.java:149)
at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337)
at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:101)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:485)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:452)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:346)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101)
at java.lang.Thread.run(Thread.java:724)
Caused by: java.lang.IndexOutOfBoundsException: readerIndex(1) + length(1) exceeds writerIndex(1): UnpooledHeapByteBuf(ridx: 1, widx: 1, cap: 1)
at io.netty.buffer.AbstractByteBuf.checkReadableBytes(AbstractByteBuf.java:1160)
at io.netty.buffer.AbstractByteBuf.readByte(AbstractByteBuf.java:562)
at lilypad.packet.common.util.BufferUtils.readVarInt(BufferUtils.java:19)
at lilypad.packet.common.PacketDecoder.decode(PacketDecoder.java:23)
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:232)

Even though it is spamming on console, everything is fine?

What do you consider "spamming" @michaelh3x3n@gmail.cxom ? Its not that often on my server.