custom-error-no-custom-404.mdx
title: 'Custom _error without /404'
Why This Error Occurred
You added a custom /_error page without adding a custom /404 page. Adding a custom /_error typically opts your application out of having the automatic static optimization applied to the 404 page.
Possible Ways to Fix It
Add a pages/404.js with the 404 page you would like to show.
Useful Links
Rendered from the public repository vercel/next.js on GitHub; content belongs to its authors. Cached for up to an hour.