You attempted to statically export your application via `output: 'export'` or `next export`, however, one or more of your pages uses `getServerSideProps`.
It is not possible to use `getServerSideProps` without a server, so you'll need to use `next start` when self hosting or deploy to a provider like [Vercel](https://vercel.com).
2. If you want to use server-side rendering, update your build command and remove `output: 'export'` and remove `next export`. For example, in your `package.json`:
> Pages that use `getStaticProps` or [no lifecycle](/docs/pages/building-your-application/rendering/automatic-static-optimization) **will still be static**!