Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
my domain is : kib.viriback.com
I ran this command: /usr/bin/certbot renew --quiet
It produced this output:
Attempting to renew cert (kib.domain.com) from /etc/letsencrypt/renewal/kib.domain.com.conf produced an unexpected error: Failed authorization procedure. kib.domain.com (http-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching https:///.well-known/acme-challenge/GXB8AMxMZcJky9qz0TNPdLXCTqGoa_7kAdPOCr2ZbmE: Error getting validation data. Skipping.
All renewal attempts failed. The following certs could not be renewed:
My web server is (include version): nginx 1.10.3
The operating system my web server runs on is (include version): ubuntu 16.04
I can login to a root shell on my machine (yes or no, or I don’t know): yes
I’m using a control panel to manage my site (no, or provide the name and version of the control panel): no