title: vapor: Address already in use (errno: 98)
body: <p>I deployed my vapor project to Ubuntu. And made the configuration of supervisor and Nginx.</p>
  
  <p>When I invoke my server. first call is success but When I try second call I get 502 bad gateway error from browser. When I check error log, the error is </p>
  
  <pre><code>"Fatal error: Error raised at top level: bind(descriptor:ptr:bytes:) failed: Address already in use (errno: 98) : file /home/buildnode/jenkins/wo$"
  </code></pre>
  
  <p>If I kill the port(8080) process. And after, I try to connect again first try is success then get fail again.</p>
  
  <p>What should I do to get rid of this error?</p>