Error on client joint to already open session


We are using Unity & Fusion for our project. We are using AutoHostOrClient mode. We require functionality to connect player to already open room where other player joined previously and playing, For that we have add below code

Runner.SessionInfo.IsVisible = true;

Runner.SessionInfo.IsOpen = true;

But when client try to join it show error like this.

[Fusion] Fusion.StartGameException

StartGameException: Connection Refused