I'm a student just starting to study the web.

I built a project with SSG (output: "export") for uploading to Cloudflare pages.
I am using Next.js version 13.
I used something called app routing, but when I build with SSG, I get "txt" in the URL address when I go to another page.
this is my first HTML

Inside the A tag, the address looks fine, but when you click to go to the page, it has TXT attached to it.

After I build the project, that txt file is automatically generated, and it contains this

I have some code in my script that seems to reference this, and I'd appreciate any advice on how to fix it.

I tried npm run dev and It works.
I've searched several pages trying to find something similar to this and haven't found a similar question.
I just want to make sure that when I do npm run start, it routes normally.
Answer to myself
https://github.com/vercel/next.js/issues/48996
Downgrade
nextmodule version to 13.2.and start it after build.
I think It's common bug in Next.js 13.3 version.
..이런 버그가 왜 있는거야 찾느라 엄청 고생했네