Cloudflare SSL error

https://acornmetric.com/s/5ZfO1x-6YxsQKeGwiHCe4

A Cloudflare SSL error usually pops up when your browser can't verify the site's certificate through Cloudflare's proxy, often due to a mismatch between the origin server's SSL config and Cloudflare's encryption settings, like having 'Full' instead of 'Flexible' SSL selected, or an expired certificate on your server.