.Catch< added

C-UI/SCU_Store.cs

@@ -32,7 +32,7 @@ namespace C_UI
                      request.OnResponseReceived += (req, response) => logger.Info($"{response.Status}-{fileName}");
                      await client.AddRequestAsync(request);
                      await client.SendAsync();
-                 }).Select(x => fileName))
+                 }).Select(x => fileName).Catch<string, Exception>(exp => throw new Exception($"failed to send: {fileName}, with error:{exp.Message}")))
                 .Concat()
                 .Subscribe(
                     filename =>