crash_info_entry_0: CoreUI: deallocating _CUIInternalLinkRendition ... Assets.car
Solution 1:
I have a player and the crash happened when I was force removing a time observer from the player. But the timeObserverToken is nil.
The Fix: Just unwrap token with if let before using!
func endPlayerObserving () {
//BAD CODING, Don't ever force unwrap optional objects
player?.removeTimeObserver(timeObserverToken!)
}