there is no SQL cache DB located at unsplash//Cache.db about unsplash-photopicker-ios HOT 4 CLOSED

private var imageDataTask: URLSessionDataTask?
private let cache = ImageCache.cache

private(set) var isCancelled = false

func downloadPhoto(with url: URL, completion: @escaping ((UIImage?, Bool) -> Void)) {
    guard imageDataTask == nil else { return }

    isCancelled = false

    if let cachedResponse = cache.cachedResponse(for: URLRequest(url: url)),
        let image = UIImage(data: cachedResponse.data) {
        completion(image, true)
        return
    }

    let config = URLSessionConfiguration.default
    config.urlCache = cache
    let session = URLSession(configuration: config)

    imageDataTask = session.dataTask(with: url) { [weak self] (data, response, error) in
        guard let strongSelf = self else { return }
        strongSelf.imageDataTask = nil

        guard let data = data, let response = response, let image = UIImage(data: data), error == nil else { return }

        let cachedResponse = CachedURLResponse(response: response, data: data)
        strongSelf.cache.storeCachedResponse(cachedResponse, for: URLRequest(url: url))

        DispatchQueue.main.async {
            completion(image, false)
        }
    }

    imageDataTask?.resume()
}

func cancel() {
    isCancelled = true
    imageDataTask?.cancel()
}

    imageDataTask = session.dataTask(with: url) { [weak self]...`