Ionic/Electron - windows-build.js not found

I have been following a tutorial on using Electron with Ionic. All was fine until the final build.

So I put:

npm run windows-build

and get the following:

Error: Cannot find module ‘c:\Users\\ionic-desktop\src\windows-build.js’
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
at Function.Module._load (internal/modules/cjs/loader.js:562:25)
at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
at startup (internal/bootstrap/node.js:283:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
npm ERR! errno 1
npm ERR! ionic-desktop@0.0.1 windows-build: node src/windows-build.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the ionic-desktop@0.0.1 windows-build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.’

Not sure what to try to resolve this, have tried searching the net but can’t find anyone else that has had this issue. There isn’t a windows-build.js fine in src/ which will be the issue, but following this tutorial - it’s not there to manually add anyway.

Any suggestions on how to resolve this?