/feed/rss page not found

I am using Twenty Eleven and I am getting a 404 Not Found for every page in the site for mysite.com/feed/rss
I don’t even have a link to that on my site but I guess search engines or people are looking for it. I understand that WordPress is supposed to generate RSS feeds automatically. Is there a problem in the Twenty Eleven theme or is this a problem with WordPress 3.9.1 that isn’t letting the RSS feed be found? Even when I add a link to the URL for the feed, it can’t be found–all I get is a refresh of the home page so it doesn’t seem to exist at all. Does anyone know how to fix the Not Found problem or how to get the RSS feed to show up?

I am wondering if the RSS feed is only for sites that have posts and not for WordPress sites that aren’t blogs.
If that is the case, how do I disable the attempts to find the RSS feed?

Thanks. My site is http://wdcb.stcwdc.org