ArcGISMapImageLayer myMapImageLayer = new ArcGISMapImageLayer(new Uri(gpServiceResultUrl))
await myMapImageLayer.LoadAsync(); ------> this thing get exemption and above mentioned title is the result of this exemption.
I was using Contour example of localserver----
Local server geoprocessing | ArcGIS for Developers ---this is the link of the example
please try to resolve this issue.
G N Sharan Sai