Unable to open nethsec ui

Thank you for reporting.
This could be a regression due to a fix for this issue: Unable to disable legacy LuCI UI after system upgrade · Issue #760 · NethServer/nethsecurity · GitHub

I can’t reproduce your problem on a clean machine.
Could you please paste the output of the following commands?

Commands:

  • uci show ns-ui
  • find /etc/nginx/
  • /usr/sbin/nginx -T -c /etc/nginx/uci.conf
  • cat /etc/nginx/uci.conf