Pages with `getServerSideProps` can not be exported

Question

I think i am making some kind of confusion here.

According to the documentation, if i want Server Side Rendering (SSR) for the page i export the async function:

getServerSideProps

But if i do that i can't build the project for running either locally or now Zeit now. If i try build or deploy i get:

Error for page /_error: pages with getServerSideProps can not be exported. See more info here: https://err.sh/next.js/gssp-export

The link provided by the error says i can't export. But I used the example from the documentation below:

import React from "react"

export async function getServerSideProps() {
        return { props: {  } }
}

function Page({ data }) {
    // Render data...
}

export default Page

Do i have to change some configuration somewhere?

How to prevent from building this static page?

Answer 1

Won´t work on page _error.js, by design decision, as posted here by nextjs maintenance staff.

One possibility is to use getInitialProps, instead.

Answer 2

getStaticProps() is the way to go under the following conditions:

• The data required to render the page is available at build time ahead of a user’s request
• The data comes from a headless CMS
• The data can be publicly cached (not user-specific)
• The page must be pre-rendered (for SEO) and be very fast — getStaticProps generates HTML and JSON files, both of which can be cached by a CDN for performance

Refer here for when to use getStaticProps vs getServerSideProps

• https://nextjs.org/docs/basic-features/data-fetching/get-static-props vs:
• https://nextjs.org/docs/basic-features/data-fetching/get-server-side-props