Model is loading....

When I run npm run watch, it keep dying model is loading without any result 
```
Assams-MacBook-Pro:demos assam$ npm run watch

> tfjs-models@0.0.1 watch /Users/assam/Downloads/pose_estimation-master/demos
> NODE_ENV=development parcel --no-hmr --open index.html

Server running at http://localhost:58142 - configured port 1234 could not be used.
✨  Built in 3.91s.
```