Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-02-19T21:21:50","request-id":"72b7380d-22a6-4d7e-afd8-1f6ea58eb4fe","client-request-id":"72b7380d-22a6-4d7e-afd8-1f6ea58eb4fe"}}}"