I have a problem with the build. First of all, I am new to Next Js. When I enter npm run build, I get this error

> Build error occurred
Error: Export encountered errors on following paths:
        /
        /blog
        /ourWorks
        /services

I searched Google for this problem and found fallback: false and tried in my code, but it did not work. I think the reason is for getStaticProps

One of my component (path /services):

services/index.js

export async function getStaticProps() {
  const res = await fetch("http://localhost:3000/api/servicesApi/");
  const posts = await res.json();

  return {
    props: {
      posts,
    },
  };
}

my package.json

  "scripts": {
    "dev": "next dev",
    "build": "next build",
    "start": "next start",
    "lint": "next lint"
  },