Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-08-03T19:57:03","request-id":"d68d40cf-5a8f-44f2-8493-41c1689fdf80","client-request-id":"d68d40cf-5a8f-44f2-8493-41c1689fdf80"}}}"