401 not authenticated error google oauth

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1

Hello, I’m starting to learn on how to authenticate sign in using Google API. My sign in button works fine but when i test the endpoint api via Postman, i received 401 not authenticated. Also I got this error line in my VS Code: [next-auth][error][CLIENT_FETCH_ERROR]
Errors | NextAuth.js “[object Object]” is not valid JSON

How can I fix that?

2

Have a look at the following in the first instance.

How to Access Google APIs Using OAuth 2.0 in Postman | Postman Blog

If you still need help, then please use screenshots to show where you are at.