App sudden crash loading url - ios

Question

I have the following function to load data. The function worked just fine till a couple of days ago. The app crashes trying to load any url, see code below and screenshot. Coding ios/swift just a few days a year, it pretty hard to figure out what's wrong...
class func loadDataFromURL(_ url: URL, completion:#escaping (_ data: Data?, _ error: NSError?) -> Void) {
let session = URLSession.shared
// Use NSURLSession to get data from an NSURL
let loadDataTask = session.dataTask(with: url, completionHandler: { (data: Data?, response: URLResponse?, error: NSError?) -> Void in
if let responseError = error {
completion(nil, responseError)
} else if let httpResponse = response as? HTTPURLResponse {
if httpResponse.statusCode != 200 {
let statusError = NSError(domain:"com.xyz", code:httpResponse.statusCode, userInfo:[NSLocalizedDescriptionKey : "HTTP status code has unexpected value."])
completion(nil, statusError)
} else {
completion(data, nil)
}
}
} as! (Data?, URLResponse?, Error?) -> Void)
loadDataTask.resume()
}

Answer 1

Use below code with latest Swift 3.0 syntax it works on Xcode 8.2:-
func loadDataFromURL(_ url: URL, completion:#escaping (_ data: Data?, _ error: NSError?) -> Void) {
let session = URLSession.shared
// Use NSURLSession to get data from an NSURL
let loadDataTask = session.dataTask(with: url) { (data, response, error) in
if let responseError = error {
completion(nil, responseError as NSError?)
} else if let httpResponse = response as? HTTPURLResponse {
if httpResponse.statusCode != 200 {
let statusError = NSError(domain:"com.xyz", code:httpResponse.statusCode, userInfo:[NSLocalizedDescriptionKey : "HTTP status code has unexpected value."])
completion(nil, statusError)
} else {
completion(data, nil)
}
}
}
loadDataTask.resume()
}