Oauth error invalid_request: The redirect_uri is not whitelisted

Question

I\'m trying to develop an app with React and Node based on this documentation:

I followed the tutorial step by step but I\'m stuck in testing the app with this URL f

Answer 1

Mistake I was doing that I forgot to postpend /auth/callback to Forwarding URL to the Allowed redirection URL(s) section generated by following command:

ngrok http 3000

so redirect url will be like:

https://SOME_STRING.ngrok.io/auth/callback