崩溃：致命错误：在展开Optional值时意外发现nil

Question

我无法弄清楚为什么我会收到此错误：fatal error: unexpectedly found nil while unwrapping an Optional value

这是我的ViewController代码：

class TableViewController: UITableViewController {


var objects = [Play]()


override func viewDidLoad() {
    super.viewDidLoad()

    let container = CKContainer.defaultContainer()
    let publicData = container.publicCloudDatabase

    let query = CKQuery(recordType: "Play", predicate: NSPredicate(format: "TRUEPREDICATE", argumentArray: nil))
    publicData.performQuery(query, inZoneWithID: nil) { results, error in
        if error == nil { // There is no error
            for play in results! {
                let newPlay= Play()
                newPlay.title = play["Title"] as! String
                newPlay.description = play["Description"] as! String

                NSLog("Title %@", newPlay.title);

                self.objects.append(newPlay)

                dispatch_async(dispatch_get_main_queue(), { () -> Void in
                    self.tableView.reloadData()
            })
            }
        }
        else {
            print(error)
        }
    }

}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete implementation, return the number of rows
    return objects.count
}


override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("reuseIdentifier", forIndexPath: indexPath)

    let object = objects[indexPath.row]

    if let label = cell.textLabel{
        label.text = object.title
    }

    return cell
}

似乎所有东西都在我的故事板中。

有什么想法吗？将根据需要发布任何额外的代码，谢谢！