nextjs npm run build favicon.ico\route.js does not exist 에러 해결

$ npm run build

Failed to compile.

HookWebpackError: File C:\Users\xxx\Projects\next-favicon-reproduction\.next\server\app\favicon.ico\route.js does not exist.
...
...
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> Build failed because of webpack errors

위와 같은 에러가 난다면 favicon 파일을 삭제 후 build 해보세요!

레퍼런스: https://github.com/vercel/next.js/issues/48603