Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-19T04:55:59","request-id":"18870b53-23a9-40b3-bc96-09713bc831b7","client-request-id":"18870b53-23a9-40b3-bc96-09713bc831b7"}}}"