chez.com has an A (IPv4) record (212.27.63.127) 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.
Get "http://.well-known.chez.com/acme-challenge/letsdebug-test": syntax error
Trace:
@0ms: Making a request to http://chez.com/.well-known/acme-challenge/letsdebug-test (using initial IP 212.27.63.127)
@0ms: Dialing 212.27.63.127
@163ms: Server response: HTTP 301 Moved Permanently
@163ms: Received redirect to http://.well-known.chez.com/acme-challenge/letsdebug-test
@173ms: Experienced error: syntax error
A test authorization for chez.com to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
212.27.63.127: Fetching http://.well-known.chez.com/acme-challenge/MIjc9kQL5seABUmQ_BrPwf3Mx4o83FQ5Djzb77KJ1M0: DNS problem: server failure at resolver looking up A for .well-known.chez.com; DNS problem: server failure at resolver looking up AAAA for .well-known.chez.com