resolve runtime error caused by empty location structure in the request

		var geocoordinates []gisClient.GeoCoordinate

		for _, routeInfo := range route.RouteInfo {

			if routeInfo.Location == nil {

				log.Error("Mandatory location parameter not present in routeInfo")

				http.Error(w, "Mandatory location parameter not present in routeInfo", http.StatusBadRequest)

			// empty location attribute will cause a runtime error: invalid memory address or nil pointer dereference

			if routeInfo.Location == nil || routeInfo.Location.GeoArea == nil {

				log.Error("Mandatory attribute location is either empty or not present in routeInfo")

				http.Error(w, "Mandatory attribute routes.routeInfo.location is either empty or not present in the request in at least one of the routeInfo structures.", http.StatusBadRequest)

				return

			}