SwiftyDropbox Swift 3 - No error response when Internet connection is down

Thanks for getting back to me.

I am using IOS 10.2 - Swift 3 - Xcode 8.2.1. This is what I have:

func test(){

        if let client = DropboxClientsManager.authorizedClient {

            let destination: (URL, HTTPURLResponse) -> URL = { temporaryURL, response in

                let filePath = file.docsDir.appendingPathComponent("/file.xml")

                return filePath

            }

            client.files.download(path: "/file.xml", overwrite: true, destination: destination)

                .response { response, error in

                    if let response = response {

                        print(response)

                    } else if let error = error {

                        print(error)

                    }

                }

                .progress { progressData in

                    print(progressData)

            }

        }

    }

When the wifi is on and internet is ok, everything works. However, if I turn the wifi off and run it again, I don't get any errors or anything. I think neither the destination and download functions are being called in this situation.