Disconnecting from server from packet bug

I get disconnected from my server, the message is "Internal Exception: io.netty.handler.codec.DecoderException: java.io.IOException: Packet 0/66 was larger than I expected, found 3 bytes extra whilst reading packet 66",
What I was doing was I was in survival mode and started attacking a spider,
and then I got disconnected, and then anytime I joined in again I'd get disconnected for the same error.