Cannot find watch module

[arunabhdas]

trafficstars

I get the following error when I run gulp build using the gulpfile.js in this example

==> gulp build module.js:339 throw err; ^

Error: Cannot find module './semantic/tasks/watch' at Function.Module._resolveFilename (module.js:337:15) at Function.Module._load (module.js:287:25) at Module.require (module.js:366:17) at require (module.js:385:17) at Object. (/Semantic-UI-CSS-master/gulpfile.js:9:18) at Module._compile (module.js:435:26) at Object.Module._extensions..js (module.js:442:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:311:12) at Module.require (module.js:366:17) at require (module.js:385:17)