Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-04-16T01:34:22","request-id":"266a08fe-a9a4-4404-b4fa-2a373f8fd67e","client-request-id":"266a08fe-a9a4-4404-b4fa-2a373f8fd67e"}}}"