By default the Total theme disables the Design Options tab from the WPBakery Page Builder (for several reasons). Which may cause a bug with some 3rd party plugins (I have only seeing it happen twice). The solution is very simple though.
- Go to Theme Panel
- Locate and enable the option that reads “WPBakery Page Builder Design Options“
- Go to WPBakery > General Settings
- Click the “save changes” button at the bottom (this should fix the error).
- You can now disable the Design Options tab again in the Theme Panel.