'CFURLCreateStringByAddingPercentEscapes' is deprecated: first deprecated in tvOS 9.0 - Use [NSString stringByAddingPercentEncodingWithAllowedCharacters:] instead, which always uses the recommended UTF-8 encoding, and which encodes for a specific URL component or subcomponent (since each URL component or subcomponent has different rules for what characters are valid). [-Wdeprecated-declarations]