Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-18T09:31:33","request-id":"02587c3f-d916-4aa7-a651-9afbc0d3cfd2","client-request-id":"02587c3f-d916-4aa7-a651-9afbc0d3cfd2"}}}"