title: React native ERROR Packager can't listen on port 8081
body: <p>When I run command <code>react-native start</code>, it shows <code>Packager can't listen on port 8081</code>. </p>
  
  <p>I know the issue is about software using my port 8081 .</p>
  
  <p>I use Resource Monitor to see the port, but I can't find 8081, there is no 8081</p>
  
  <p>Can someone show me how to find it?</p>
  
  <p><a href="https://i.stack.imgur.com/nieET.png" rel="noreferrer"><img src="https://i.stack.imgur.com/nieET.png" alt="enter image description here"></a></p>