Cannot navigate directly to a frontend path when serving static files via python server

[allisonking]

Bug Description

Right now we can go to localhost:8080 and navigate to localhost:8080/dataset via the navbar. However, browsing directly to localhost:8080/dataset does not work.

Steps to Reproduce

1. nox -s dev
2. In clients/admin-ui run npm run prod-export
3. Navigate directly to localhost:8080/dataset and check out the error

Expected behavior

Navigating directly to a path should give the same result as if we were to navigate to it through next's routing

Additional context

This should be a nextjs configuration issue. The same thing happens if you try to serve the exported files out via a simple server i.e. python -m http.server. Some potential resources/solutions:

• https://github.com/vercel/next.js/discussions/10522
• https://stackoverflow.com/questions/67034554/nextjs-url-not-working-after-getting-exported
• https://nextjs.org/docs/api-reference/next.config.js/exportPathMap