Network not reachable

I am having this error while I try to run my game on mobile data-

Receive issue. State: Connected. Server: '159.8.0.198' Exception: System.Net.Sockets.SocketException: Network is unreachable
at System.Net.Sockets.Socket.Receive (System.Byte[] buffer) [0x00000] in :0
at ExitGames.Client.Photon.SocketUdp.ReceiveLoop () [0x00000] in :0

Please suggest me what to do.