it seems to me that there are some issues with msesandbox.cisco.com. Maps API do work but real-time and history do not e.g. for URLs like "
https://msesandbox.cisco.com/api/contextaware/v1/location/clients?mapHierarchy=DevNetCampus>DevNetBuilding>DevNetZone" (from MSE Learning Lab) I'm getting "404 Not Found". Consequently, one of my applications that worked last week does not work now.