In Wiki Loves Monuments, click on any number in the 'Uploaders' column, then on any number in the 'Images' column. Result is 502 Bad Gateway.
Thanks for reporting this and giving reproduction steps.
However I can’t reproduce: on https://tools.wmflabs.org/wikiloves/monuments/2019, I can click through to https://tools.wmflabs.org/wikiloves/monuments/2019/Germany/users, https://tools.wmflabs.org/wikiloves/monuments/2019/Russia/users, https://tools.wmflabs.org/wikiloves/monuments/2019/Italy/users, etc.
Same thing on https://tools.wmflabs.org/wikiloves/monuments
@MichaelMaggs Can you please provide the URLs that 502s?
The images view 502s when providing a username parameter:
But without it’s fine