Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-13T21:24:46","request-id":"701bc7f2-3a70-418f-b9be-e22ad8a3f30a","client-request-id":"701bc7f2-3a70-418f-b9be-e22ad8a3f30a"}}}"