title: Node-red Unable to listen on http://127.0.0.1:1880
body: <p>When I try to start node-red by PUTTY with the cmd line: </p>
  
  <pre><code>node-red 
  </code></pre>
  
  <p>I receive the following error and I can't open node-red by my browser:</p>
  
  <blockquote>
    <p>9 Jan 14:13:05 - [error] Unable to listen on <a href="http://127.0.0.1:1880/" rel="nofollow noreferrer">http://127.0.0.1:1880/</a>
    9 Jan 14:13:05 - [error] Error: port in use</p>
  </blockquote>
  
  <p>I don't know how to fix this problem!
  Thanks</p>