Prevent fetching a page with a .html extension
The current nginx config allows route without file extensions to be fetched, but does not prevent the file extensions from being used; in this case, react-router will not find any clientside routes and so not render the desired content.
The desired behaviour is probably to return a 404 when html file extensions are used, or potentially a redirect?
https://www.seagreencube.com/articles/concerns-over-air-quality-research-at-walcot-parade.html