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:
dtbk.dtbafrica.com
I ran this command:
sudo certbot --nginx -d dtbk.dtbafrica.com
It produced this output:
failed ( 101 : Network is unreachable ) while requesting certificate status, responder: ocsp.int-x3. letsencrypt .org
My web server is (include version):
Nginx 1.17.3
The operating system my web server runs on is (include version):
Ubuntu 16.04.6
My hosting provider, if applicable, is:
Digital Ocean
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
The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot): 0.31.0