When I try a "certbot-auto renew", I get this log :
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Processing /etc/letsencrypt/renewal/travelforlocal.com-0001.conf
Cert is due for renewal, auto-renewing...
Renewing an existing certificate
Performing the following challenges:
http-01 challenge for travelforlocal.com
http-01 challenge for www.travelforlocal.com
Waiting for verification...
Cleaning up challenges
Attempting to renew cert from /etc/letsencrypt/renewal/travelforlocal.com-0001.conf produced an unexpected error: Failed authorization procedure. travelforlocal.com (http-01): urn:acme:error:unauthorized :: The client lacks sufficient authorization :: Invalid response from http://travelforlocal.com/.well-known/acme-challenge/t5Y2GzPXwsslpueiN9HT6JGPDrs_QeOjE4hh6aal4Hg [54.85.16.51]: 404, www.travelforlocal.com (http-01): urn:acme:error:unauthorized :: The client lacks sufficient authorization :: Invalid response from http://www.travelforlocal.com/.well-known/acme-challenge/rP5wqpafEUwCsRKO6ypNKdAZ5vDzIf2bNl4jEvRrejk [54.85.16.51]: 404. Skipping.
It's a Ubuntu 14.04.3 LTS server, running with NodeJS.
Someone already get this error?