When trying to add a new RSS feed I get the following error:
This address does not point to an RSS feed or a website with an RSS feed.
This is the feed:
https://harboroughfm.co.uk/news/feed
rssboard org/rss-validator says a valid 
W3 says Valid 
https://validator.w3.org/feed/check.cgi?url=https%3A%2F%2Fharboroughfm.co.uk%2Fnews%2Ffeed
It doesn’t look like it has any stories. Here’s the feed xml:
<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
xmlns:content="http://purl.org/rss/1.0/modules/content/"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:atom="http://www.w3.org/2005/Atom"
xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
>
<channel>
<title>
Comments on: News </title>
<atom:link href="https://harboroughfm.co.uk/news/feed/" rel="self" type="application/rss+xml" />
<link>https://harboroughfm.co.uk</link>
<description>Local Radio For Market Harborough</description>
<lastBuildDate>Wed, 22 Jun 2022 14:57:48 +0000</lastBuildDate>
<sy:updatePeriod>
hourly </sy:updatePeriod>
<sy:updateFrequency>
1 </sy:updateFrequency>
<generator>https://wordpress.org/?v=6.8.2</generator>
</channel>
</rss>