Invalid entry inside getStaticPath's return value

InvalidGetStaticPathsEntry: Invalid entry returned by getStaticPaths. Expected an object, got ENTRY_TYPE

What went wrong?

Section titled What went wrong?

getStaticPaths’s return value must be an array of objects. In most cases, this error happens because an array of array was returned. Using .flatMap() or a .flat() call may be useful.

pages/blog/[id].astro

export async function getStaticPaths() {
  return [ // <-- Array
    { params: { slug: "blog" } }, // <-- Object
    { params: { slug: "about" } }
  ];
}

See Also:

• getStaticPaths()