RSS Links Not Working

Hi,

S’cuse my ignorance, but in the theme I’m using, there is not an RSS link in the side panels – only in the footer.

So I went and got the code from the footer, which is:

<a href="<?php bloginfo('rss2_url'); ?>">Entries (RSS)</a> and <a href="<?php bloginfo('comments_rss2_url'); ?>">Comments (RSS)</a>.

But when I tested the links (Entries and Comments) they both went to an error page.

The exact same links in the footer go to:

https://stopthatbreakup.com/feed/
and
https://stopthatbreakup.com/comments/feed/

How come the code doesn’t work in a text widget in the side panel?

And how can I correct it please?

Thank you