Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-06-27T03:50:42","request-id":"1a1e2620-8201-4b2c-99d4-cdbc67fdfd4f","client-request-id":"1a1e2620-8201-4b2c-99d4-cdbc67fdfd4f"}}}"