gulp -> Error: Broken @import for fonts.googleapis.com

[SergioAtSUSE]

I cloned the project and I executed gulp, but I get an error:

mansilla@copland:~/github/landing-page$ gulp
[17:17:29] Using gulpfile ~/github/landing-page/gulpfile.js
[17:17:29] Starting 'scripts'...
[17:17:29] Starting 'less'...
[17:17:29] Starting 'imagesCompression'...
[17:17:29] Starting 'watch'...
[17:17:29] Finished 'watch' after 33 ms
[17:17:29] Starting 'runServer'...
[17:17:36] Finished 'scripts' after 6.85 s

events.js:141
      throw er; // Unhandled 'error' event
      ^
Error: Broken @import declaration of "http://fonts.googleapis.com/css?family=Source+Sans+Pro:200,300,400,600" - timeout
mansilla@copland:~/github/landing-page$