Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-22T11:23:13","request-id":"f7211067-e4ef-4a7b-933c-4fec82c5446a","client-request-id":"f7211067-e4ef-4a7b-933c-4fec82c5446a"}}}"