Today when i tried to renew my certificates using this command I\'m facing error
/opt/letsencrypt/letsencrypt-auto renew --config /etc/letse
I faced the same issue and upgrading pip and virtualenv as instructed in this post worked for me.
sudo pip install --upgrade pip sudo pip install --upgrade virtualenv rm -rf ~/.local/share/letsencrypt /opt/letsencrypt/letsencrypt-auto --debug