System.Net.Http.HttpRequestException: Response status code does not indicate success: 400 (Bad Request).
at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode()
at System.Net.Http.HttpClient.GetStreamAsyncCore(HttpRequestMessage request, CancellationToken cancellationToken)
at Waffle.ExternalAPI.Services.FacebookService.GetPhotosAsync(String id, Int32 limit, String before, String after, String access_token)