Why can't I get SSL: DNS problem NXDOMAIN looking up A for www.domain.com?

Question

Domain Name System

Such a question, I'm trying to get SSL with this command:

sudo certbot --apache -d your_domain -d www.your_domain

But it throws an error:

IMPORTANT NOTES:
- The following errors were reported by the server:

Domain: www.domain.com
Type: None
Detail: DNS problem: NXDOMAIN looking up A for www.domain.com -
check that a DNS record exists for this domain

On the host:

how to fix?

Answer 1

www add to DNS and host.