Online multiplayer anyone?

If anyone wants to play online then DM me.
ANd can anyone help me with this error? i get it when I play multiplayer :-

Error while processing message: Arithmetic operation resulted in an overflow. Stack trace: at System.Convert.ToInt64(Single value)
at Darkly.GDTMP.dmultiplayersrv.OnReceive(IWebSocketConnection context, String data)

EDIT :- This error…