Can't reach your site
Introduction
If you cant reach your open edx site and couldn't find any error in your LMS and CMS, then issue might be with your nginx configuration.
Solution
If you have modified your nginx configurations check them and if not then check the status of nginx by using the below command.
sudo systemctl status nginx
If you see the status inactive like in above image restart the ngnix server and again check the status.
sudo systemctl restart nginx
sudo systemctl status nginx