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:https://www.iimeedu.com/
root@iimeedu:~# sudo apt install certbot python3-certbot-apache
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
certbot is already the newest version (1.21.0-1build1).
python3-certbot-apache is already the newest version (1.21.0-1).
0 upgraded, 0 newly installed, 0 to remove and 67 not upgraded.
root@iimeedu:~# sudo ufw allow 'Apache Full'
Skipping adding existing rule
Skipping adding existing rule (v6)
root@iimeedu:~# sudo certbot --apache
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Please enter the domain name(s) you would like on your certificate (comma and/or
space separated) (Enter 'c' to cancel): iimeedu.com
Requesting a certificate for iimeedu.com
Certbot failed to authenticate some domains (authenticator: apache). The Certificate Authority reported these problems:
Detail: 22.214.171.124: Invalid response from http://iimeedu.com/.well-known/acme-challenge/gl66TeCZ_gR1FBH4dzlq6FrBhsKV6WaZ8GHRSA148_o: 404
Hint: The Certificate Authority failed to verify the temporary Apache configuration changes made by Certbot. Ensure that the listed domains point to this Apache server and that it is accessible from the internet.