Fluent will not allow you to add certain sources that other readers have no problem with

[tv21]

Describe the bug
Fluent will not allow you to add certain sources that other readers have no problem with

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Sources'
2. Under 'Add Source' paste this URL: https://www.dslreports.com/forum/voip_20.xml
3. Click on 'Add'
4. See error: 'An error has occured when adding the source.: Error: An error has occurred when parsing the XML feed.'

Expected behavior
It should add the feed, like every other RSS feed reader I have tried does. And that is not the only feed it has a problem with that other readers do not.

Platform (please complete the following information):

• OS: Ununtu
• Version 24.04

Additional context
I suspect this happens because the feed is not perfectly formatted 100% according to someone's specifications but unfortunately that is not something that we as users have any control over. And other readers I have tested have no problem with this feed (unfortunately they don't do other things that Fluent does a bit better).

[HugoVG]

Currently having this same problem trying to add Jenkins rss