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{
            "firstName": req.body.firstName,
            "lastName": req.body.lastName,
            "email": req.body.email,
            "role": req.body.role,
            "birthday": new Date(req.body.birthday),
            "sex": req.body.sex,
            "password": pw
}

func putUser(accessToken: String, refreshToken: String, emailCurrent: String, firstName: String, lastName: String, emailNew: String,
                 role: Int, sex: String, password: String){

        print("vi kører putUser med denne accessToken (accessToken) og refreshToken (refreshToken)")

        let urlPath = "http://xxxxxxxxxxxxxx/api/users/user/(emailCurrent)"
        let url = NSURL(string: urlPath)
        let session = URLSession.shared
        let request = NSMutableURLRequest(url: url as! URL)
        request.addValue(accessToken, forHTTPHeaderField: "accessToken")
        request.addValue(refreshToken, forHTTPHeaderField: "refreshToken")
        request.httpMethod = "PUT"


        let postString = "firstName=(firstName)&lastName=(lastName)&email=(emailNew)&role=(role)&birthday=2010-09-08&sex=(sex)&password=(password)"


     //   let strinng = "firstName=(firstName)&lastName=(lastName)&email(emailNew)&role=(role)&birthday=2010-09-08&sex=(sex)&password=(password)"

        print()
        print()

        print("Here is postString from putUser: (postString)")

        request.httpBody = postString.data(using: String.Encoding.utf8)


        let task = session.dataTask(with: request as URLRequest, completionHandler: {data, response, error -> Void in
            print("Task completed (data) and response is xxxx")

//            print all info as a string. ---
                        let responseString = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
                        print("responseString = (responseString!)")


        })
        task.resume()

    }

Here is postString from putUser:
firstName=abcd&lastName=bb&email=abc@gmail.com&role=1&birthday=2010-09-08&sex=female&password=123
Task completed Optional(169 bytes) and response is xxxx
responseString = <!DOCTYPE html><html><head><title></title><link rel="stylesheet" href="/stylesheets/style.css"></head><body><h1>Unexpected token f</h1><h2></h2><pre></pre></body></html>