he problem: “certbot renew” doesn’t work as nginx forwards to another service using proxy_pass The error looks something like this: Processing /etc/letsencrypt/renewal/wiki.lupsha.com.conf ——————————————————————————- Cert is due for renewal, auto-renewing… Plugins selected: Authenticator webroot, Installer None Renewing an existing certificate Performing the following challenges: http-01 challenge for wiki.lupsha.com Waiting for verification… Cleaning up challenges Attempting to ..