User default if statements not working

There seems to be something wrong with one of my if statements. Can anyone tell me why error is getting printed?

func getRecordToUpdate(_ locations:CLLocation)
        {
            if defaults1.object(forKey: "locationData") == nil{
                defaults1.set("yes", forKey: "locationData")
            }else{
                print("error")
                    if let loadedData = UserDefaults.standard.data(forKey: "locationData") {
                    if (NSKeyedUnarchiver.unarchiveObject(with: loadedData) as? String) != nil
                    {
                       print("good")
                    }
               }
          }
    }