title: Minified exception occurred; use the non-minified dev environment for the full error message and additional helpful warnings
body: <p>I get that error in browser console.
  In package.json
  I set this</p>
  
  <pre><code> "start": "set NODE_ENV=development &amp;&amp; node dev-server ./webpack/config",
  </code></pre>
  
  <p>but it still give same error.I look for minified or min JS file but I can not find any file.It just find this in project <code>import React from 'react';</code></p>
  
  <p>How can I handle that error?How can I use non minified react file?
  I am new in NodeJS </p>