title: Error when running to 'npm-start' on React app
body: <p>I'm trying to run a React app, but when I try to start the development server, the
  error appears.</p>
  <p><a href="https://i.stack.imgur.com/aZ2ly.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/aZ2ly.png" alt="enter image description here" /></a></p>
  <p>Not quite sure why this happened, because I run it a week ago and was working fine. I tried reinstalling it, running 'reacts-scripts start', none of these worked.</p>