Add default response when area name or type is not found.

src/app/_services/location.service.ts

@@ -35,6 +35,7 @@ export class LocationService {
         return queriedAreaName;
       }
     }
+    return 'other';
   }
 
   getAreaTypes(): void {
@@ -54,5 +55,6 @@ export class LocationService {
         return queriedAreaType;
       }
     }
+    return 'other';
   }
 }