A fatal issue occurred during the DNS lookup process for vantrong.com/CAA.
DNS response for vantrong.com had fatal DNSSEC issues: validation failure <vantrong.com. CAA IN>: No DNSKEY record from 173.245.58.82 for key vantrong.com. while building chain of trust
A fatal issue occurred during the DNS lookup process for vantrong.com/A.
DNS response for vantrong.com had fatal DNSSEC issues: validation failure <vantrong.com. A IN>: No DNSKEY record from 2a06:98c1:50::ac40:21f6 for key vantrong.com. while building chain of trust
A fatal issue occurred during the DNS lookup process for vantrong.com/AAAA.
DNS response for vantrong.com had fatal DNSSEC issues: validation failure <vantrong.com. AAAA IN>: No DNSKEY record from 2a06:98c1:50::ac40:2052 for key vantrong.com. while building chain of trust
No valid A or AAAA records could be ultimately resolved for vantrong.com. This means that Let's Encrypt would not be able to connect to your domain to perform HTTP validation, since it would not know where to connect to.
No A or AAAA records found.