Used Rufus for creating bootable file of hera 5. But it always shows error.It shows 'Unable to download file'. Please fix this as early as possible.
It's possible a problem with Rufus, not with elementary OS. You could download the elementary ISO yourself here: https://elementary.io/
After that you can point to the downloaded image from Rufus. You could also use another tool like YUMI, UnetBootin or Balena Etcher.