Request doesn't contain auth token

[gabineagu]

Hi!
Sorry that I've created this issue again, but I didn't find an answer in the previous topic.

I've managed to connect to my provider and I get the JWT, I can view and parse it, however when I redirect to /protected or access the link I get this error: Client error 'POST to the IDP resulted in a 400 Bad Request' response: {'error':'invalid_request', 'error_description':'OAuth Client Authentication Failure because code parameter is missing}. Now, I understand the error message, but I don't know how to fix it, how or where can I add the code to the protected request.

The guide is not clear enough for me.
After parsing the JSON with the data, how can I use it? I've tried to use the method Auth::setUser($user), but it doesn't work, somehow the data doesn't persist!?