Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-07-01T06:17:40","request-id":"302f0c58-f7e8-4368-acdf-f09808be70eb","client-request-id":"302f0c58-f7e8-4368-acdf-f09808be70eb"}}}"