Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-24T19:05:55","request-id":"3e183691-e2af-4ccc-a8e9-57421020cdd0","client-request-id":"3e183691-e2af-4ccc-a8e9-57421020cdd0"}}}"