Not found page doesn't work in production

[distant pasture]

So I have a pretty new portfolio website that uses NextJS with the app dir and when I'm runnig it locally, my not-found.tsx works fine, but when I deploy the app to Vercel, it just completely stops existing, which causes me to be able to visit any route and if it's a 404 then the home page will be displayed.

[restive sinew]

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[rich niche]

To confirm, you are following this strucutre? https://nextjs.org/docs/app/api-reference/file-conventions/not-found

If you are, and still having issues try this: https://github.com/vercel/next.js/issues/60477#issuecomment-2154653383

[distant pasture]

Yes, I am