I am creating a 2D map using version 4.1 of the API. Prior to October 7th, 2016 I had no issue loading a Map using any of the basemaps in a MapView. Since then, I can only load the OSM basemap. Whenever I try a different basemap (e.g. "streets" or "gray", I receive the following type of error in the console: "server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer/tile/8/93/77:1 GET file://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer/tile/8/93/77 net::ERR_FILE_NOT_FOUND"
The issue seemed to start shortly after ESRI posted an issue with the Vector Basemaps Service on October 6th.
I have the same issue when I copy any of the sample codes from the documentation to a local file and run it from my computer.
Any ideas what might be the problem here?