Cyberfr connexion à Graph Microsoft : ok string(237) "{"error":{"code":"InvalidAuthenticationToken","message":"Access token is empty.","innerError":{"date":"2026-09-21T01:40:03","request-id":"6e79bda7-0e29-4d73-bf5d-5908e167ae57","client-request-id":"6e79bda7-0e29-4d73-bf5d-5908e167ae57"}}}"