HSTS Missing From HTTPS Server (RFC 6797) on pcsd port 2224

Issue

• The vulnerability HSTS missing from HTTPS server (RFC 6797) is detected on pcsd port 2224:

Name: HSTS Missing From HTTPS Server (RFC 6797)
Summary: The remote web server is not enforcing HSTS, as defined by RFC 6797.
Port: 2224
...
Plugin Output:
  HTTP/1.1 404 Not Found
  Server: TornadoServer/6.1
  Content-Type: text/html;charset=UTF-8
  Date: *****
  Content-Length: 69
  Connection: close

  The remote HTTPS server does not send the HTTP
  "Strict-Transport-Security" header.

• This vulnerability still exists even PCSD GUI is disabled.