Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-07T15:00:08","request-id":"0ca5dd0b-3139-49b9-b12d-f6cec64c8c6c","client-request-id":"0ca5dd0b-3139-49b9-b12d-f6cec64c8c6c"}}}"