OAuth2.0 token strange behaviour (Invalid Credentials 401)

Question

Usually, Google OAuth2.0 mechanism is working great.

1. The user confirms permission to access Google account with selected scopes.
2. The refresh token is

Answer 1

userInfo: Invalid Credentials I got the following error because the scopes array elements i was trying to access ie profile and email whose links I got from google+ api scope page: came to be somehow false/invalid so I went to my consent screen and there under Scopes for Google APIs was mentioned email profile openID on hovering on each I got there respective urls replacing my old ones with these resolved my error