I am getting this error in WordPress when I am using a plugin called WpBakery Visual Composer.
I am using the latest version of WordPress (4.5), using the latest Go
Funny thing... my visual composer version number was way above the latest update (4.8.*).
Anyways...I had this same problem and those previous answers did not completely solve my problems, so I decided to try and buy a new copy of the plugin. It worked out well.
I can now confirm that the Visual Composer version 4.12.1 works with the WordPress 4.6.1 without errors.
Also note this:
There is no such directory as backend
or such a file called composer-view.js
in the latest version of Visual Composer.
PS. Using these GUI page builders sucks ***.