RSS throwing 404 error
You have named the file feed.rss, and you are trying to access it by going to /rss. So I can see two issues here:


The template file needs to be either .html or .twig, as per the
tutorial you have referenced
The name of the template file will dictate the URL for that template. If you re-name your template file to feed.twig, you access that template by going to /feed