WebSocket connection to 'ws://ws.pusherapp.com/app/mykey?protocol=7&client=js&version=3.0.0&flash=false' failed: WebSocket is closed before the connection is established.Pusher : Error : {"type":"WebSocketError","error":{"type":"PusherError","data":{"code":4001,"message":"Could not find app by key 2fc11da86545bf860219. Perhaps you're connecting to the wrong cluster."}}}