Cloudflare ssl does not working

Hi

I changed my domain’s dns server to cloudflare.

After that when I connect to my server with http, it works well.
But when I tried to connect to my server with https, it says my web server is down.


I already enabled SSL on cloudflare.
How should I resolve this?

I assume that your SSL encryption mode is Full or Full (strict).

Full or Full (strict) mode contacts your web server via port 443, but port 443 is not open in the server, hence the Error 521.

Configure your web server to accept HTTPS traffic via port 443 with a valid SSL certificate, then proceed with Full (strict) SSL mode.

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