Invalid_grant - Authorization code verifier invalid

[tomkas]

Hello ! Happy new year ! I am trying to get data from Fitbit to my Django project.

I am following this documentation (https://dev.fitbit.com/build/reference/web-api/developer-guide/authorization/). After the the step that redirects the user to Fitbit Authorization page, I am getting this response :

'errors': [{'errorType': 'invalid_grant', 'message': 'Authorization code verifier invalid: <my_code_verifier> Visit https://dev.fitbit.com/docs/oauth2 for more information on the Fitbit Web API authorization process.'}], 'success': False}

[GordonFitbit]

Hi @tomkas 

Are you on step 3 or 4 of that page?

Gordon