Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-05-04T23:45:17","request-id":"c2b7cc9c-234f-4b4b-ad10-5a295f54014e","client-request-id":"c2b7cc9c-234f-4b4b-ad10-5a295f54014e"}}}"