LetsEncrypt: "unable to get local issuer certificate"

That makes good sense. I’ve had trouble with this, though.

Webmin automatically updates, but I’ve never found a way to get Virtualmin to update itself. Could you give me a pointer to a procedure? Thank you.

PS I saw your Virtualmin in 2021 post. I really appreciate the clear statement of your roadmap and your (financial) position: I had no idea. I intend to purchase a Pro license when my bank next opens up. Thanks again.