javascript - Can't build React/Next project - found page without a React Component as default export (context api file)

Question

I'm trying to build my Next.js project but it keeps giving me this error in the terminal:

Error: Build optimization failed: found page without a React Component as default export in 
pages/components/context/Context

That's the React context API file, there isn't supposed to be any default export there. Is this a bug or what?

question from:https://stackoverflow.com/questions/65598753/cant-build-react-next-project-found-page-without-a-react-component-as-default