title: Failed to load resource under Chrome net::ERR_ADDRESS_IN_USE
body: <p>When my application page is loaded, it takes this mistake</p>
  
  <p>But when I'm refreshed, the page will be ok.</p>
  
  <p><img src="https://i.stack.imgur.com/UH5Yi.png" alt="screenshot"></p>
  
  <p>Please help me analyze this mistake, which is the chrome error code? What is the cause of the mistake?</p>