Redirecting in nginx results in errors - nginx

Question

Environment: Ubuntu 18.04, nginx, WordPress
WordPress is running fine at https://www.example.org. In addition, the following rule is defined to direct http to https:
server {
if ($host = www.example.org) {
return 301 https://$host$request_uri;
} # managed by Certbot
listen 80;
server_name www.example.org;
return 404; # managed by Certbot
}
With this, a user's request to http://www.example.org automatically gets redirected to https://www.example.org.
Now, I am trying to define a rule such that https://example.org can also be redirected to https://www.example.org.
Here is my new nginx rule:
server {
listen 443 ssl;
server_name example.org;
return 301 https://www.example.org$request_uri;
}
However, this seems results in breaking the whole site. Even https://www.example.org, that was working fine earlier, gives an error that "this site can't be reached."
This is the last error from nginx error.log:
no "ssl_certificate" is defined in server listening on SSL port while SSL handshaking, client: blah, server: 0.0.0.0:443
To recap,
https://www.example.org works fine
http://www.example.org properly gets redirected to https://www.example.com
https://example.org does not work. It should also have been redirected to https://www.example.org
Can someone please tell me what is it that I am doing wrong? Regards.

Answer 1

You haven't specified if you need all URIs to redirect, but here are several options. Make sure you are restarting the nginx service after these changes.
Specific URIs
server {
listen 80;
server_name example.org www.example.org;
return 301 https://example.org$request_uri;
}
All URIs
server {
listen 80 default_server;
server_name _;
return 301 https://$host$request_uri;
}