func file_get_content(page: String) throws -> String {
        guard let url = URL(string: page) else {
            throw "Cannot load that URL"
        }
        guard let contents = try? String(contentsOf: url) else {
            throw "Cannot load content from \(url)"
        }
        if (contents.isEmpty) { throw "Content of \(url) is empty" }

        return contents
    }
// how to use
        do {
            let content = try file_get_content(page: "") // اذا مافيه اي خطأ كمل
        } catch {
            // اذا فيه غلط خلص طلع رساله
            let alert = UIAlertController(title: "DBMovie", message: error.localizedDescription, preferredStyle: .alert)
            alert.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
            self.present(alert, animated: true, completion: nil)
        }