The live example in Angular doc is broken

I’m submitting a…

[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  
[ ] Feature request
[ x ] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question

Current behavior

Expected behavior

The live example in Angular doc is broken

Minimal reproduction of the problem with instructions

open Angular doc,example, find the live example link and click it, it was broken, only return {"message":"An internal server error occurred","statusCode":500,"error":"Internal Server Error"}

What is the motivation / use case for changing the behavior?

I can’t overview the doc intuitively;

Environment

Angular version: latest


Browser:
- [ x ] Chrome (desktop) version 56.0.2924.87 (64-bit)
- [ ] Chrome (Android) version XX
- [ ] Chrome (iOS) version XX
- [ ] Firefox version XX
- [ ] Safari (desktop) version XX
- [ ] Safari (iOS) version XX
- [ ] IE version XX
- [ ] Edge version XX
 
For Tooling issues:
- Node version:  6.0
- Platform:  windows

Others:

[xsteadybcgo]

I have tried again , it is fixed now.

[gkalpak]

It is the same issue, but this is a new occurrence 😒 Let’s keep this open until it is fixed.