[MapProxy] Layer becomes black

[Denis Rykov]

Updating Pillow to latest version did the trick.

On Wed, Dec 6, 2017 at 3:24 AM, Denis Rykov <rykovd at gmail.com> wrote:
> Faced with the very strange issue.
>
> I have the following configuration: source as MapServer WMS (TIF
> raster) -> MapProxy -> WMS Service.
> If MaProxy requests extent which not contains any data then I get
> black image, otherwise all works as expected.
>
> You can check live demo here: http://rykovd.nextgis.com/resource/358/display
>
> MapProxy config:
>
> caches:
>   bfa_cache:
>     grids: [webmercator]
>     sources: ['mapserver:bfa']
>     cache:
>       type: sqlite
>
> sources:
>   mapserver:
>     type: mapserver
>     wms_opts:
>       featureinfo: true
>     req:
>       map: /opt/mapserver/mapfile.map
>       transparent: true
>
> Any thoughts?