Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-02-26T21:06:48","request-id":"e7a902ae-8eaa-428d-871c-6eedaf99bce3","client-request-id":"e7a902ae-8eaa-428d-871c-6eedaf99bce3"}}}"