public async Task <ActionResult> ArchiveTeam(RootModel rootModel)
        {
            try
            {
                string accessToken = await GetToken(rootModel);

                Flight flight  = new Flight(adminUpn);
                string groupId = await graphService.ArchiveTeam(lastGroupCreated);

                ViewBag.CreateTeamDone = "Enable";
                return(DefaultView(rootModel));
            }
            catch (Exception e)
            {
                if (e.Message == Resource.Error_AuthChallengeNeeded)
                {
                    return(new EmptyResult());
                }
                return(RedirectToAction("Index", "Error", new { message = Resource.Error_Message + Request.RawUrl + ": " + e.Message }));
            }
        }