Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-12T19:40:13","request-id":"85bb0ea8-6a99-4cf4-b880-56290a1a9f2e","client-request-id":"85bb0ea8-6a99-4cf4-b880-56290a1a9f2e"}}}"