MDX file is not found 404 but build process is success not error, not warning and another page is working, SSR only is 404 not found in local is working and i ensure follow this post https://community.vercel.com/t/debugging-404-errors/437
https://github.com/Moonies/new-portfolio my project repo
There's another community post with 404 debugging tips that might be helpful. Please give these solutions a try and let us know how it goes.
https://community.vercel.com/t/debugging-404-errors/437
A human should be around soon to offer more advice. But you can also get helpful information quickly by asking v0.
It looks like the site is working now. Is there a specific path I should visit to see the 404 error?
my bad, I tested it, so I made a mistake with the version. https://new-portfolio-moonies.vercel.app/en/work
for more detail when i use direct [slug] url https://new-portfolio-moonies.vercel.app/en/work/ISF is still working. i must have setting something and i follow this example https://magic-portfolio-for-next-js-self-theta.vercel.app
i fixed it!! just and generateStaticParams in SSR page when get post
Awesome! I'm glad you found the solution. Thanks for coming back here to share the answer 
