Hi @andrewfahmi89-9547, sorry that you're facing this issue. Could you share a bit more about your project: tech stack, deployment logs, domain name or build outputs?

This would help community members suggest solutions.

We also have this community post which may help you debug: https://community.vercel.com/t/debugging-404-errors/437

Vercel Community

Debugging 404 Errors

Sometimes things don’t go as expected when deploying a website. If you see a 404 on your site, that means the page or resource couldn’t be found. There are...