iOS13 (beta) Apple Login error
@available(iOS 13.0, *)
func authorizationController(controller: ASAuthorizationController, didCompleteWithError error: Error)
I've encountered the same issue yesterday and I've managed to fix it following these steps:
Devices
section you should find devices on which you are signed in with your Apple ID,I'm not sure what caused this issue, probably some issue between the simulator and Apple ID.