ajgassner
commented
9 years ago All layers fetch 1/1/1.png or 1/1/1.jpeg tile to initialize themselves. Other map layers return an empty tile or a HTTP status 302 found. Basemap.at returns 404, because the requested file doesn't exists on their servers. I think we can ignore this issue and close it for now.
The Basemap.at layer causes some 404 errors, see e.g. Chrome's console.