/api/games/user/{username} returns generic site 404 instead of API response

[mbratmann]

Issue

GET /api/games/user/{username} returns the generic "Page not found" SPA page (404, text/html) instead of the documented game export response.

Repro

curl -v 'https://lichess.org/api/games/user/DrNykterstein?max=1' --header 'Accept: application/x-chess-pgn'

Expected

PGN export of the user's games.

Actual

HTTP status 404, response content-type text/html, body is the standard Lichess "Page not found" page.

Ruled out

• Not account-specific -- tested different existing accounts.
• Not header-specific -- same with any/no Accept header.
• Not a general /api/ or network/DNS/TLS issue -- /api/user/{username} for example works fine