Ambiguous use of 'swipeBack'

[Jeminaa]

Sorry if I'm asking a dumb question, as I'm a beginner developer.
My code was working well before, but After I updated my XCode to 12, it fails to build saying

Ambiguous use of 'swipeBack'

On

self.navigationController?.swipeBack?.isEnabled = false

Any advise will be appreciated. thank you