I have a MEAN stack web site that runs on node.js server.
I followed the guild to obtain a ssl file using this command.
sudo certbot --nginx -d xxx.xxx.com
But I got this error.
Detail: Invalid response from
To fix these errors, please make sure that your domain name was
entered correctly and the DNS A/AAAA record(s) for that domain contain(s) the right IP address.
How can I fix this error? Thx.