Error 404 page not working

I made a 404 page for my website , but the normal default netlify 404 page comes

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Site name =# edantic-liskov-874997Domain =

Greg Raven via Netlify Community <netlify@discoursemail.com> 於 2020年10月5日週一 下午10:30寫道:

Hi, @Githubuser. The custom 404 page should be found as /404.html relative to the base of the publish directory. There is some documentation about this here:

https://docs.netlify.com/routing/redirects/redirect-options/#custom-404-page-handling

You can download the files in a deploy with the button in this screenshot:

download-deploy-button-small

Note, when I download this deploy, I do not see any 404.html file included. Are you sure this file is being included in this site’s deploys?