steps to reproduce: steps to reproduce: 1. Log in as an admin and load https://marketplace-dev.allizom.org/en-US/developers/app/backpack/edit 2. Empty the manifest URL field 3. Save changes expected behavior: Show an error on trying to save an empty manifest URL actual behavior: We don't retain the changes but we show a "Changes Saved" success notification.

resolved -> DONTDOTHAT if we need to have better error messages for valid use cases like you have htp:/// instead of http:// or something let us know. Blank fields don't bother me, especially when we don't actually save them.