Support Team
Post count: 768

The problem source is “Salient Visual Composer” should be updated to latest version because it can’t contains “Vc_Grid_Item_Editor” class so you need to contact theme author or check updates of the theme and update modified “Salient Visual Composer” plugin.

Othervise standalone Visual Composer working with All in one Social Icon Addons for Visual Composer.

I hope those are clear.