I get this when trying to connect to a minecraft server?

I get this when trying to connect to a minecraft server internal exception: io.netty.handler.codec.DecoderException: java.lang.IndexOutOfBoundsException: readderInderx(9) + length(1) exceeds writerIndex(9): UnpooledHeapByteBuf(ridx:9, wids: 9 cap: 9)