share the path you are trying to access, and what do you get when you try to access it?

postman gves this when i try to access the api route

working fine for me, are you sure you're accessing correct server?

yes i am sure

this postman is local? Like is postman installed? Or is this the web version?

I would assume it's the local version, since it is able to access the next.js server

just the api is shown as 404

it is installed

try restarting server

tried it

can you access other paths/pages?

Some causes that I can imagine:
1. OP has both src/app and app
2. OP’s middleware is doing some shenanigans to block /api

yeah, if possible share your entire directory.

thanks i fixed it

why does this code without headers gives a html response and 404 error and with header gives a json response

How did you do that?

This is a new question, so make a new post