Checklist P259 App Crash on trying to set Today's Date

📚 Official Books iOS Apprentice
1

When I click on the “Due Date”, the app will crash。Why?:cold_sweat:

var dueDate = NSDate()
…
func showDatePicker() {
…
datePicker.setDate(dueDate, animated: false)
}

fatal error: unexpectedly found nil while unwrapping an Optional value
(lldb)

2

I know that the problem is, the datePicker’s outlet not connected.