Font awesome icons src unknown

Hi,

There seems to be a problem with the icon boxes that are made with Uncode Visual Composer.

I’ve updated all plugins to the latest version and WP is currently on the latest version too.

I’ve disabled every plugin except Visual Composer and each individually to see if there was a conflict, but no luck. Same issue is occurring.

screenshot:

View post on imgur.com

As you can see there is a image tag with src=”unknown”.

Thanks

Can anyone point me in the right direction?

The page I need help with: [log in to see the link]