Hi all,

I am getting null in logoutId in the following function while using the demo user ID, Any reason why?

    public async Task<IActionResult> Logout(string logoutId)
    {
        if (User.Identity.IsAuthenticated == false)
        {
            // if the user is not authenticated, then just show logged out page
            return await Logout(new LogoutViewModel { LogoutId = logoutId });
        }

        //Test for Xamarin. 
        var context = await _interaction.GetLogoutContextAsync(logoutId);
        if (context?.ShowSignoutPrompt == false)
        {
            //it's safe to automatically sign-out
            return await Logout(new LogoutViewModel { LogoutId = logoutId });
        }

        // show the logout prompt. this prevents attacks where the user
        // is automatically signed out by another malicious web page.
        var vm = new LogoutViewModel
        {
            LogoutId = logoutId
        };
        return View(vm);
    }