title: Confluent Control Center is not starting
body: <p>confluent control center is not starting.</p>
  
  <p>I executed following commands to start Confluent platform</p>
  
  <ol>
  <li>Zookeeper start (Terminal 1)</li>
  <li>Kafka start (Terminal 2)</li>
  <li><p>Schema Registry Start (Terminal 3)</p></li>
  <li><p>Then I tried to start Control Center (Terminal 4). But got Error. Its not starting.</p></li>
  </ol>
  
  <pre><code>    [2019-10-30 08:58:36,331] INFO [main] unable to get command store (io.confluent.command.CommandStore)
      [2019-10-30 08:58:37,331] INFO [main] unable to get command store (io.confluent.command.CommandStore)
      [2019-10-30 08:58:37,331] WARN [main] unable to start with allowance=300000 (io.confluent.command.CommandStore)
      [2019-10-30 08:58:37,332] ERROR [main] failed to start topology (io.confluent.controlcenter.ControlCenter)
  java.util.concurrent.TimeoutException
          at io.confluent.command.CommandStore.start(CommandStore.java:108)
          at io.confluent.controlcenter.ControlCenter.main(ControlCenter.java:124)
  </code></pre>