I noticed that Revolution slider had a structure like:
id | title | alias | params | settings | type
Unfortunately, the plugin isn't self-correcting.
Nevertheless, "settings" and "type" had no entries within the database.
When cloner copied the website, these table columns were never included. This lead on to a PHP fatal error.
I require no support on this, as it has already been resolved. But I just wanted to report this bug .