I am running a web-viewer base mobile app and in-app there is a feature to log in with Google. On iOS app I am getting an error as shared.
Looks a solution
Looks like Google wants us to use the device browser to send OAuth requests, instead of the embedded web-view. We need to add code to the mobile app (outside the web app) to sign-in with Google (they did this for security and usability reasons).
See https://developers.googleblog.com/2016/08/modernizing-oauth-interactions-in-native-apps.html
I need a solution as soon as possible.