Stamen Terrain layer seems broken

[naoliv]

While trying to use the Stamen Terrain layer, first we get a redirect and then a not found:

For example:

GET https://stamen-tiles-a.a.ssl.fastly.net/terrain-background/16/24098/36891.jpg -> HTTP_1_1 301 (22 B)
Download redirected to '/terrain-background/16/24098/36891.png'
GET https://stamen-tiles-a.a.ssl.fastly.net/terrain-background/16/24098/36891.png -> HTTP_1_1 404 (286 B)

Opening ​https://stamen-tiles-a.a.ssl.fastly.net/terrain-background/16/24098/36891.png on the browser we can see:

404 Not Found

    Code: NoSuchKey
    Message: The specified key does not exist.
    Key: terrain-background/16/24098/36891.png
    RequestId: C08D89AA9E326945
    HostId: pX2MO+NZg8WYANX8lbnNzEQHdoiW2mmNcJFe3o5j9Bf5CUoFlZnn1V/xu9rX0ylDOSH+5U7BWro=

I am unsure if we can simply update the URL to http://{switch:a,b,c,d}.tile.stamen.com/terrain/{zoom}/{x}/{y}.png

[Klumbumbus]

It seems to work only until zoom 12-14 depending on the position.

[naoliv]

Should the maximum zoom of the current layer be updated to 14 or the URL? (the other URL seems to have tiles on higher zooms)

[Klumbumbus]

Replying to naoliv:

I am unsure if we can simply update the URL to http://{switch:a,b,c,d}.tile.stamen.com/terrain/{zoom}/{x}/{y}.png

Thats a different source (terrain vs. terrain-background). There are four versions see ​http://maps.stamen.com/ It seems there is a bug with the terrain-background layer of stamen as terrain seems to work fine and delivers tiles at higher zoom levels at the same position.

I changed jpg to png and I found ​https://github.com/stamen/maps.stamen.com/issues/107.