An error occurred while updating WPBakery Page Builder: To receive automatic updates license activation is required. Please visit Settings to activate your WPBakery Page Builder. Got WPBakery Page Builder in theme?
Do I have to buy it?
The WPBakery that comes with theme does not include a license with it so you cannot update it in that manner.
Usually the plugin is update when the theme is updated but if you need to use the latest version then you will need to purchase you own license to keep WPBakery plugin updated.
Hope this clears things up.