How To Install wildcard SSL?

I'm Using One-Click OpenLiteSpeed On DigitalOcen Ubuntu 18.04 Server. I Have Installed SSL Certificate Via Cyberpanal. And It's Working Fine Without WWW But When I Open My Site With HTTPS and WWW ( its showing certificate not valid error. SSL.PNG


Make sure your ssl certificates are wildcard one instead of for only , not for It doesn't look like an OLS configuration issue, but SSL certificates issue.