Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-23T11:26:13","request-id":"982e609a-501d-4c5b-b855-aae162e9b60c","client-request-id":"982e609a-501d-4c5b-b855-aae162e9b60c"}}}"