I was using 404.html and 404.pt.html in /layouts/ to serve different pages when the server returned a 404 in the default language or Portuguese. Looking at it today, both of the built files are the initial 404.html. Did something change in the way Hugo builds this page?

Custom 404 per language

ju52 August 16, 2019, 12:28pm 4

with this hint

try with 404.pt.html