Couldn't start the server at step: Demo: Basic app.js about react-yelp-clone HOT 1 CLOSED

Okay, Got it! There was some compatibility problem between @babel-core and babel-loader. There was another issue which I found in the console when the terminal was not giving any more errors on running NODE_ENV=development ./node_modules/.bin/hjs-dev-server is that React.creatClass is an undefined function. To fix this install create-react-class
npm install create-react-class --save-dev
Create a new variable in app.js below ReactDOM import statement
var createReactClass = require('create-react-class');
Replace
const App = React.createClass in app.js
to
const App = createReactClass

And everything worked fine :)

from react-yelp-clone.