Update: Add appropriate error message when for getServerSideProps invalid return value (#35887)

errors/invalid-getserversideprops-return-value.md

@@ -0,0 +1,21 @@
+# Invalid getServerSideProps Return Value
+
+#### Why This Error Occurred
+
+In one of the page's `getServerSideProps` the return value had the incorrect shape.
+
+#### Possible Ways to Fix It
+
+Make sure to return the following shape from `getServerSideProps`:
+
+```ts
+export async function getServerSideProps(ctx: GetServerSidePropsContext) {
+  return {
+    props: { [key: string]: any }
+  }
+}
+```
+
+### Useful Links
+
+- [getServerSideProps](https://nextjs.org/docs/api-reference/data-fetching/get-server-side-props)

errors/manifest.json

@@ -645,6 +645,10 @@
         {
           "title": "import-next",
           "path": "/errors/import-next.md"
+        },
+        {
+          "title": "invalid-getserversideprops-return-value",
+          "path": "/errors/invalid-getserversideprops-return-value.md"
         }
       ]
     }

packages/next/server/render.tsx

@@ -255,12 +255,17 @@ export type RenderOptsPartial = {
 
 export type RenderOpts = LoadComponentsReturnType & RenderOptsPartial
 
-const invalidKeysMsg = (methodName: string, invalidKeys: string[]) => {
+const invalidKeysMsg = (
+  methodName: 'getServerSideProps' | 'getStaticProps',
+  invalidKeys: string[]
+) => {
+  const docsPathname = `invalid-${methodName.toLocaleLowerCase()}-value`
+
   return (
     `Additional keys were returned from \`${methodName}\`. Properties intended for your component must be nested under the \`props\` key, e.g.:` +
     `\n\n\treturn { props: { title: 'My Title', content: '...' } }` +
     `\n\nKeys that need to be moved: ${invalidKeys.join(', ')}.` +
-    `\nRead more: https://nextjs.org/docs/messages/invalid-getstaticprops-value`
+    `\nRead more: https://nextjs.org/docs/messages/${docsPathname}`
   )
 }