title: "No-referrer-when-downgrade" Nginx 502
body: <p>I have a 502 error on some pages of my site, I do not understand why some pages work but others display this error:</p>
  
  <blockquote>
    <p>Request Method:POST
    Status Code:502 Bad Gateway
    Referrer Policy:no-referrer-when-downgrade</p>
  </blockquote>