Getting ERR_CONNECTION_REFUSED On Non-HTTPS Page

I am having a weird issue, my HTTPS page is working fine and I can use website over HTTPS but my website is not working on http, it shows ERR_CONNECTION_REFUSED on Chrome and even when I use https://downforeveryoneorjustme.com/, it shows website is down

My website is technoarea.in

port 80 is closed in your server. check apache/nginx ports and virtualhosts configs… you have nothing running on http

I installed Varnish on my server by following steps mentioned here https://www.virtualmin.com/documentation/system/varnish

after following this I am getting such error