Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-04T13:13:18","request-id":"78d33f9a-7fed-4fd5-acf4-15e21c7d2f98","client-request-id":"78d33f9a-7fed-4fd5-acf4-15e21c7d2f98"}}}"