vercel/next.js · error

Your `getServerSideProps` function did not return an object.

Error message

Your `getServerSideProps` function did not return an object. Did you forget to add a `return`?

What it means

Renders the GSSP_NO_RETURNED_VALUE invariant in renderToHTMLImpl: after awaiting the user's getServerSideProps the resolved data is null/undefined. The input at fault is the function's return value — usually a forgotten return or an early code path that returns nothing — which cannot be turned into page props.

Source

Thrown at packages/next/src/server/render.tsx:1140

            defaultLocale: renderOpts.defaultLocale,
          })
      )
      canAccessRes = false
      metadata.cacheControl = { revalidate: 0, expire: undefined }
    } catch (serverSidePropsError: any) {
      // remove not found error code to prevent triggering legacy
      // 404 rendering
      if (
        isError(serverSidePropsError) &&
        serverSidePropsError.code === 'ENOENT'
      ) {
        delete serverSidePropsError.code
      }
      throw serverSidePropsError
    }

    if (data == null) {
      throw new Error(GSSP_NO_RETURNED_VALUE)
    }

    if ((data as any).props instanceof Promise) {
      deferredContent = true
    }

    const invalidKeys = Object.keys(data).filter(
      (key) => key !== 'props' && key !== 'redirect' && key !== 'notFound'
    )

    if ((data as any).unstable_notFound) {
      throw new Error(
        `unstable_notFound has been renamed to notFound, please update the field to continue. Page: ${pathname}`
      )
    }
    if ((data as any).unstable_redirect) {
      throw new Error(
        `unstable_redirect has been renamed to redirect, please update the field to continue. Page: ${pathname}`

View on GitHub (pinned to 89d017eac4)

Solutions

1. Make `getServerSideProps` return an object, e.g. `return { props: {} }`.
2. Check all code paths (including early returns and error branches) return an object.

When it happens

Trigger: Thrown at packages/next/src/server/render.tsx:1142 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of vercel/next.js@89d017eac4 (2026-08-19). Data as JSON: /api/errors/17224cc9ca02c6ae. Report an issue: GitHub.