Error: "invalid_grant"

[ky23mojie]

Hello,
I deployed application on Heroku, and tried to get the access code by passing curl -X POST -d "code=[code]" https://[myapp].herokuapp.com/api/token.
But I got the error "invalid_grant"

{"error":"invalid_grant","error_description":"Invalid authorization code"}

I checked document on Authorization Guide but couldn't figure out what happened.

The following steps are double-checked again:

1. I deployed the Heroku App according to the tutorial exactly;
2. The client ID, client secret and redirect URI set in the Heroku App are identical to my application created in Spotify for Developer.

So far I can not solve the problem by myself.
Does anybody have any hints or experience about solving it?
Thanks!

[Sudok]

same issue here, can someone help?

[alfredoxyanez]

You have to get a the auth code from Spotify. The authcode is returned to you via the Redirect URI

[fotiDim]

It works for me. I am pretty sure there is misconfiguration on your side. Check your SpotifyRedirectURI and your tokenSwapURL. The latter should end with /api/token.