var req = new JoinTokenRequest
        {
            ParticipantName = Username,
            RoomName = RoomName
        };

        var tokenOp = UnityService.RequestJoinToken(req);
        yield return tokenOp;

        if (tokenOp.IsError)
        {
            Debug.LogError("An error occurred while getting a join token");
            // Debug.LogError(tokenOp.Error.message);
            // ExitGame();
            yield break;
        }