Windows 7, 8 or 10. Linux (which distribution). Mac OSX (Yosemite? El Capitan?)
Please run
ng --version. If there's nothing outputted, please run in a Terminal:node --versionand paste the result here:
Was this an app that wasn't created using the CLI? What change did you do on your code? etc.
Normally this include a stack trace and some more information.
Thanks! We'll be in touch soon.