Cause:
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Processing /etc/letsencrypt/renewal/dev.stephane-huc.net.conf
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Cert is due for renewal, auto-renewing...
Renewing an existing certificate
Performing the following challenges:
Attempting to renew cert from /etc/letsencrypt/renewal/dev.stephane-huc.net.conf produced an unexpected error: None of the preferred challenges are supported by the selected plugin. Skipping.
** DRY RUN: simulating 'certbot renew' close to cert expiry
** (The test certificates below have not been saved.)
All renewal attempts failed. The following certs could not be renewed:
/etc/letsencrypt/live/dev.stephane-huc.net/fullchain.pem (failure)
** DRY RUN: simulating 'certbot renew' close to cert expiry
** (The test certificates above have not been saved.)
1 renew failure(s), 0 parse failure(s)