ionic $ module.js:339
throw err;
^
ive tried doing npm install gulp but its still coming up with this error my app is completely blank on the browser so im guessing its this thats causing me problems any ideas how to fix it
Error: Cannot find module 'gulp-concat'
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. (/Users/Jess/Downloads/Social-Network-Mobile-App-master/gulpfile.js:4:14)
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)