SSL Error on

My website returns the “Your connection is not private” message when I load.
I have installed the cloudflare SSL.
Kindly assist

Your Cloudflare configuration is working but is returning error 526

This means the SSL certificate on your origin server is invalid (expired, not trusted, not covering the hostname) so you’ll need to update it if expired or install a Cloudflare origin certificate (requires the use of the proxy) or another certificate from LetsEncrypt or another trusted CA.