chez.jcz.fr has an A (IPv4) record (109.16.70.70) but a request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address.
A timeout was experienced while communicating with chez.jcz.fr/109.16.70.70: Get "http://chez.jcz.fr/.well-known/acme-challenge/letsdebug-test": context deadline exceeded
Trace:
@0ms: Making a request to http://chez.jcz.fr/.well-known/acme-challenge/letsdebug-test (using initial IP 109.16.70.70)
@0ms: Dialing 109.16.70.70
@10000ms: Experienced error: context deadline exceeded