Attempting to load the view of a view controller while it is deallocating is not allowed

[adriancable]

Using the WebAuthenticationSession example, verbatim, from the README, on iOS 15.4.

When the popup appears on the device saying "Test App" Wants to Use "github.com" to Sign In, press Cancel on device. The following warning is then produced in the Xcode console:

2022-03-19 10:04:38.212806-0700 Test App[38555:3159860] [Warning] Attempting to load the view of a view controller while it is deallocating is not allowed and may result in undefined behavior (<SFAuthenticationViewController: 0x7f9a1481da00>)

Ideas how to fix?