i cannot join into a spesific server

Internal Exception: io.netty.handler.codec.DecoderException: java.lang.IndexOutOfBoundsException: readerIndex(9) + length(1) exceeds writer Index(9): UnpooledHeapByteBuf(ridx: 9. widx: 9, cap:9) how can i fix it? when i try to log in into a server i am loggin in and when i try to go into a spesific realm i got this message?