title: symfony server:start command throwing an error
body: <p>I try to run</p>
  
  <pre><code>symfony server:start
  </code></pre>
  
  <p>It returns an error message</p>
  
  <pre><code>The local web server is already running for this project at port 8000
  </code></pre>
  
  <p>But <code>lsof -wni tcp:8000</code> isn't returning anything, I'm sure there isn't any softwares using the port 8000.</p>
  
  <p>Starting by doing </p>
  
  <pre><code>bin/console server:start
  </code></pre>
  
  <p>is working like a charm.</p>