IONIC 2 build --release --prod error

I start my project with

IONIC start myProject -v2

I created new page via CLI with
ionic g page newpage

the new page created comes with 4 files (containing newpage.module.ts)
After design the apps. I build with
ionic build android --release --prod

but the system fail to generate production.
Error message is:
ake sure you have the latest version of node.js and npm installed.

If you do, this is most likely a problem with the langdubingxin package,
not with npm itself.
Tell the author that this fails on your system:
ionic-app-scripts build “–prod”

I go back to remove all the module.ts files. It is working fine in ionic serve!
but still fail to build production. Same error message.

Please help!

That’s not the interesting part of the error. The interesting part is the part that tells you what is wrong in what part of your code.

Please edit your post and use the </> button above the post input field to format your code or error message or wrap it in ``` (“code fences”) manually. This will make sure your text is readable and if it recognizes the programming language it also automatically adds code syntax highlighting. Thanks.