Photon join code error: "CreateRoom failed. Client is on GameServer (must be Master Server for matchmaking)but not ready for operations (State: Disco"

When i click disconnect (i use PhotonNetwork.Disconnect(); method) It says this:

CreateRoom failed. Client is on GameServer (must be Master Server for matchmaking)but not ready for operations (State: Disconnected). Wait for callback: OnJoinedLobby or OnConnectedToMaster.

What do I do?