swift – iOS Fb SDK Graph Request

I am attempting to get the person’s Fb id and e mail. I will login with out error however the GraphRequest fails.

{
                        
                        supervisor.logIn(permissions: ["public_profile", "email"], from: nil) { (consequence, err) in
                                                  
                            
                            
                            if err != nil {
                                print(err!.localizedDescription)
                                return
                            }
                        }
                        logged = true
                        
                        let request = GraphRequest(graphPath: "me", parameters: ["fields": "email"])
                        request.begin { (connection, consequence, error) in

                            if let error = error {
                                // Deal with the error
                                print("Error fetching e mail: (error.localizedDescription)")
                            } else if let userInfo = consequence as? [String: Any], let e mail = userInfo["email"] as? String {
                                // Efficiently retrieved the e-mail
                                print("Consumer e mail: (e mail)")
                            }

                            
                        }
                        
                        
                    }

Error fetching e mail: The operation couldn’t be accomplished. (com.fb.sdk.core error 8.)