Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-02-04T13:12:57","request-id":"338be7fc-be72-4044-8dcc-e45f864413bf","client-request-id":"338be7fc-be72-4044-8dcc-e45f864413bf"}}}"