ReadTimeout error for ec2 public domain

My domain is: ec2-54-91-180-148.compute-1.amazonaws.com

I ran this command:
I downloaded .sh file from https://raw.githubusercontent.com/wmnnd/nginx-certbot/master/init-letsencrypt.sh.
and then sudo ./init-letsencrypt.sh

It produced this output:

An unexpected error occurred:
requests.exceptions.ConnectTimeout: HTTPSConnectionPool(host='acme-v02.api.letsencrypt.org', port=443): Max retries exceeded with url: /directory (Caused by ConnectTimeoutError(<urllib3.connection.HTTPSConnection object at 0x7fea43cb2eb0>, 'Connection to acme-v02.api.letsencrypt.org timed out. (connect timeout=45)'))
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.
ERROR: 1

My web server is (include version): nginx

The operating system my web server runs on is (include version): ubuntu 20.04

My hosting provider, if applicable, is: AWS

I can login to a root shell on my machine (yes or no, or I don't know):

I'm using a control panel to manage my site (no, or provide the name and version of the control panel):

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