title: ERR_CERT_AUTHORITY_INVALID error while communicating from angular server(letsencrypt cert installed) to node server(self signed certs installed)
body: <p>I have my angular server installed with let'sencrypt certificate issued with a host name. and back end node servers are running with public ips with self signed certificates installed. </p>
  
  <p>am getting this error(net::ERR_CERT_AUTHORITY_INVALID) while accessing my application in the browser. and browser also shows "not secure".</p>
  
  <p>thanks for the help.</p>