Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-06T01:29:28","request-id":"d915e929-6784-428d-9dcf-9984e65a65f1","client-request-id":"d915e929-6784-428d-9dcf-9984e65a65f1"}}}"