Cron <root at horae> /usr/local/bin/certbot renew

[Cron Daemon]

Saving debug log to /var/log/letsencrypt/letsencrypt.log

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Processing /etc/letsencrypt/renewal/tcube.autonlab.org.conf
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Cert is due for renewal, auto-renewing...
Non-interactive renewal: random delay of 29.056828067473884 seconds
Plugins selected: Authenticator webroot, Installer None
Renewing an existing certificate
Attempting to renew cert (tcube.autonlab.org) from /etc/letsencrypt/renewal/tcube.autonlab.org.conf produced an unexpected error: urn:ietf:params:acme:error:serverInternal :: The server experienced an internal error :: Error retrieving account "https://acme-v01.api.letsencrypt.org/acme/reg/8522613". Skipping.
All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/tcube.autonlab.org/fullchain.pem (failure)

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