There was a server I inherited from colleagues who resigned, mostly static HTML serving. I would occasionally do a apt update && apt ugrade to keep nginx and so updated and installed certbot because IT told me that this static HTML site should be served via HTTPS, fair enough.
Then I went on parental leave and someone blocked all outgoing internet access from the server. Now certbot can’t renew the certificate and I can’t run apt. Then I got a ticket to update nginx and they told me to use SSH to copy the files needed.