Some tiles of an already-warped map are not loading correctly:

This is via the web interface, and also the WMS endpoint.

The URLs seem to be like the following, and just say "We're sorry, but something went wrong. / If you are the application owner check the logs for more information." with HTTP status 500.

https://warper.wmflabs.org/maps/wms/1280?FORMAT=image%2Fpng&STATUS=warped&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&SRS=EPSG%3A900913&BBOX=13565440.521028,-4011407.7306486,13570332.490837,-4006515.7608393&WIDTH=256&HEIGHT=256