Getting the below error while trying to install SSL on a DOMAIN :
SSL install aborted due to error: The certificate is expired
Make sure in WHM while you are trying to install the certificate you are logged in without SSL ie. IP:2086
If your WHM is not using a paid SSL, reset the self signed certificate from WHM again and then try installing SSL for the domain.
If you don’t know how to install the SSL you can check this Install SSL for a domain in cPanel server: