Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
It produced this output: Your certificate (or certificates) for the names listed below will expire in 19 days (on 20 Mar 20 04:48 +0000). Please make sure to renew your certificate before then, or visitors to your website will encounter errors.
My web server is (include version): How can I find that?
The operating system my web server runs on is (include version): How can I find that?