Certbot failed to authenticate some domains (authenticator: nginx)

Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is:

I ran this command:
sudo certbot --nginx -d lecturalink.com -d www.lecturalink.com
It produced this output:
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Requesting a certificate for lecturalink.com and www.lecturalink.com

Certbot failed to authenticate some domains (authenticator: nginx). The Certificate Authority reported these problems:
Domain: lecturalink.com
Type: unauthorized
Detail: 2a02:4780:b:838:0:334f:2a4b:3: Invalid response from http://lecturalink.com/.well-known/acme-challenge/jtLwgoFSs4n2bxNwiY3My5DiJ_zUOmtHWJsu7oIOOLc: 404

Hint: The Certificate Authority failed to verify the temporary nginx configuration changes made by Certbot. Ensure the listed domains point to this nginx server and that it is accessible from the internet.

Some challenges have failed.
Ask for help or search for solutions at https://community.letsencrypt.org. See the logfile /var/log/letsencrypt/letsencrypt.log or re-run Certbot with -v for more details.
My web server is (include version):
The operating system my web server runs on is (include version):
Ubuntu 22.04 64bit
My hosting provider, if applicable, is:Hostinger

I can login to a root shell on my machine (yes or no, or I don't know):yes
I'm using a control panel to manage my site (no, or provide the name and version of the control panel):no,I am using command line vps hosting

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):

Your DNS AAAA record for IPv6 is not set to the right address. You should correct that. If you won't have IPV 6 support then you need to remove that AAAA record.


Please follow the recommended installation for certbot on Ubuntu [with nginx]:
Certbot Instructions | Certbot (eff.org)
[installation instructions for Ubuntu 20 will also work for Ubuntu 22]


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