where is the file location to change HTTP server binding port?

I was in the GUI configuration, I think it’s admin and HTTP server section. I change both HTTP port and HTTPS port as 1443. Now I can’t load the page.

I checked some http config files (under /var/www/html and /etc/asterisk/ombutel) but I don’t see 1443 in those files so I doubt I was in the right place.

Can you tell me where the config file is? Thank you.