Google OAuth 2 authorization - swapping code for token

Question

I\'m trying to implement Google OAuth 2 to get access to Google APIs. I follow this guide, using server-side scenario.

I have no problem with getting the code, serve

Answer 1

Happens when you use wrong Client secret. Make sure you are using correct Client secret from Google API console. I was using Email address since API console displays the information in the following order:

1. Client ID
2. Email address
3. Client secret