<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

if let pictureUrl = URL(string: url) {
    do {
        let data = try Data(contentsOf: pictureUrl)
        img.image = UIImage(data: data)
        if let imageWidth = (img.image?.size.width) {
            let height = width / imageWidth * (img.image?.size.height)!
            conHeight.constant = height
        }
    }
    catch let error {
        print("Error (error.localizedDescription)")
    }
}