title: The Tomcat connector configured to listen on port 80 failed to start
body: <p>I run webapp <a href="https://github.com/donhuvy/mycustomer" rel="noreferrer">https://github.com/donhuvy/mycustomer</a>
  I face error</p>
  
  <blockquote>
    <p>Description:</p>
    
    <p>The Tomcat connector configured to listen on port 80 failed to start.
    The port may already be in use or the connector may be misconfigured.</p>
    
    <p>Action:</p>
    
    <p>Verify the connector's configuration, identify and stop any process
    that's listening on port 80, or configure this application to listen
    on another port.</p>
  </blockquote>
  
  <p>This is my log <a href="https://gist.github.com/donhuvy/93210850f955f9ddbc00ab735a0ade18#file-terminal-log-L191" rel="noreferrer">https://gist.github.com/donhuvy/93210850f955f9ddbc00ab735a0ade18#file-terminal-log-L191</a></p>
  
  <p>I have been check port 80 by command</p>
  
  <pre><code>sudo lsof -i TCP:80 | grep LISTEN
  </code></pre>
  
  <p>But result is nothing. How to fix it? (I use macOS 10.12.5)
  <br/><br/>
  <strong>Update:</strong></p>
  
  <p>Run Sencha client (inside directory <code>client</code>)</p>
  
  <pre><code>sencha web -port 8082 start
  </code></pre>
  
  <p>and I change Spring Boot port to 8082:</p>
  
  <pre><code>APPLICATION FAILED TO START
  
  Description:
  
  The Tomcat connector configured to listen on port 8082 failed to start. The port may already be in use or the connector may be misconfigured.
  
  Action:
  
  Verify the connector's configuration, identify and stop any process that's listening on port 8082, or configure this application to listen on another port.
  </code></pre>