[Solved] Unexpectedly found nil while unwrapping an optional value while reading JSON [closed]

by


Instead of guard the data parameter handle the error returned in the completion handler.
If there is no error then data can be safely unwrapped.

let task = session.dataTaskWithURL(shotsUrl!, completionHandler: {
    (data,response,error) -> Void in
    if error != nil {
      // do proper error handling

    } else {
        do {
        let json = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers)
        ...

And add also appropriate error handling in the catch scope. It seems to be annoying but can be very useful. 😉

solved Unexpectedly found nil while unwrapping an optional value while reading JSON [closed]