title: *** process.env.ENV is not defined, assuming 'prod' env
body: <p>I am unable to open My JHipster + Angular 2 (Gateway) Application home page with port 8080 (which is given at server port in <code>application-dev.yml</code>) and
  Getting following exception in console</p>
  
  <pre><code>*** process.env.ENV is not defined, assuming 'prod' env
  </code></pre>
  
  <p>The Same application is running fine on port 9000 (which is given by yarn) and giving exception like below in console.</p>
  
  <pre><code>process.env.ENV is not defined, assuming 'prod' env
  chrome-extension://kbfnbcaeplbcioakkpcpgfkobkghlhen/src/js/bundle.js:4776 *** 
  </code></pre>
  
  <p>My problem is if I use 9000 port (Given by yarn) unable to communicate with other microservices applications.</p>
  
  <p>Why am I getting the above exception?</p>