1. Follow this guide to configure Cognito in AWS: https://guides.micronaut.io/micronaut-oauth2-cognito/guide/index.html
2. When modifying the app Settings, set this configurations:
3. You will need to create a new Google OAuth 2.0 Client:
4. Now replace the client-id, client-secret and the necessary fields in issuer in the application.yml.
5. Run the application and open http://localhost:8080/
6. Click in Enter
7. After sign in with Google, the authentication will fail with the message:

{"message":"JWT validation failed","_links":{"self":{"href":"/oauth/callback/cognito?code=xxxxxx....","templated":false}}}

8. Go back to http://localhost:8080/ and click in Enter again. The authentication will be successful now.