Error while loading zone.js and main.js file

I have a django(1.6.11) project running perfectly fine. I want to use it with Angular2. So, I have been following this example. I am getting the following error on localhost:8000 page. By the way it shows Cannot GET / in localhost:3000.

Error: Zone$1http://localhost:8000/ng/node_modules/zone.js/dist/zone.js:232:1 Zone$1http://localhost:8000/ng/node_modules/zone.js/dist/zone.js:114:17 scheduleResolveOrReject/<@http://localhost:8000/ng/node_modules/zone.js/dist/zone.js:502:78 Zone$1http://localhost:8000/ng/node_modules/zone.js/dist/zone.js:265:1 Zone$1http://localhost:8000/ng/node_modules/zone.js/dist/zone.js:154:21 drainMicroTaskQueue@http://localhost:8000/ng/node_modules/zone.js/dist/zone.js:401:25 ZoneTask/this.invoke@http://localhost:8000/ng/node_modules/zone.js/dist/zone.js:339:25

Evaluating http://localhost:8000/ng/src/main.js Error loading http://localhost:8000/ng/src/main.js localhost:8000:25

Following a suggestion for a question on stackoverflow, I changed loading long-stack-trace-zone.js instead of zone.js in my index.html code. But this says, Zone is not defined. Is this some version compatibility issue? I am using npm 4.1.1 and node v4.8.3. Please do comment if I need to show any of my files.

via phanny