let params = ["fields" : "cover, link"]
            let graphRequest = GraphRequest(graphPath: "/\(user!.facebookId!)", parameters: params)
            graphRequest.start {[weak self]
                (urlResponse, requestResult) in

                switch requestResult {
                case .failed(_):
                    log.error("error in graph request:")
                    break
                case .success(let graphResponse):
                    if let responseDictionary = graphResponse.dictionaryValue {
                        log.verbose(responseDictionary)
                        if let link = responseDictionary["cover"] as? String {
                            self?.userURL = link
                        }
                        if let source = responseDictionary["cover"] as? [String: Any], let cover = source["source"] as? String, let coverUrl = URL(string: cover) {
                            self?.headerInfoView.loadCoverImage(url: coverUrl)
                        } else {
                            log.error("Facebook cover image url is invalid")
                        }
                    }
                }
            }
        }