Login screen has an error symbol and screen keeps on blinking

I have integrated auth0 in my react native application. even after completing the setup successfully, I am seeing a red error symbol on top right of login screen and screen keeps on blinking. please find the image below.

sometimes you see this red error symbol because you are still using the Auth0 provided developer keys (e.g. google client ID and Server Secret). If this is the case, create your own google application, enable api and services, configure your own OAuth credentials. One you have those, go back to the Auth0 dashboard and configure your google connection to use these keys