问题 Say my web app has two locales: English( myapp.com/en/ ) and French( myapp.com/fr/ ). I want to localize my 404 pages, so that request to myapp.com/en/non-existent or myapp.com/non-existent would return an English version of the 404 page and request to myapp.comm/fr/non-existent would return a French one. However, it seems like Firebase Hosting does not provide such functionality by default, as it only allows a single 404 page(source) So, is there a way of implementing a localized 404 page