Как обновить просроченный сертификат Let's encrypt

Я не заметил, что срок действия моего сертификата Let's Encrypt истек. Я хочу его обновить.

Я набрал команду ниже

certbot renew

Но я получил ошибку ниже.

# certbot renew
Saving debug log to /var/log/letsencrypt/letsencrypt.log

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Processing /etc/letsencrypt/renewal/www.algebra.live.conf
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Cert is due for renewal, auto-renewing...
Plugins selected: Authenticator webroot, Installer None
Starting new HTTPS connection (1): acme-v02.api.letsencrypt.org
Attempting to renew cert (www.algebra.live) from     /etc/letsencrypt/renewal/www.algebra.live.conf produced an unexpected error:     ('Connection aborted.', gaierror(-2, 'Name or service not known')). Skipping.
All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/www.algebra.live/fullchain.pem (failure)

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All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/www.algebra.live/fullchain.pem (failure)
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1 renew failure(s), 0 parse failure(s)

Как я могу продлить этот сертификат?