Title: Valid RSS feed, but namespace errors
Last modified: April 19, 2020
---
# Valid RSS feed, but namespace errors
* Resolved [honjoren](https://wordpress.org/support/users/honjoren/)
* (@honjoren)
* [6 years, 1 month ago](https://wordpress.org/support/topic/valid-rss-feed-but-namespace-errors/)
* Hello,
* Featured Images in RSS for Mailchimp & Other Email worked stopped working on
my website [http://www.damecalabazas.com](http://www.damecalabazas.com).
The
feed validation system says:
* Congratulations!
[Valid RSS] This is a valid RSS feed.
* Recommendations
This feed is valid, but interoperability with the widest range
of feed readers could be improved by implementing the following recommendations.
* line 33, column 0: Use of unknown namespace: com-wordpress:feed-additions:1 (
11 occurrences) [help]
* 175361073 -
line 48,
column 0: style attribute contains potentially dangerous content: max-width (
10 occurrences) [help]
* line 48, column 0: description should not contain link_thumbnail attribute (10
occurrences) [help]
* I don’t know the reason and I don’t know how to fix it.
* Could you provide support, please?
I’ll appreciate explanations for dummies
* Thank you
* The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fvalid-rss-feed-but-namespace-errors%2F%3Foutput_format%3Dmd&locale=en_US)
to see the link]_
Viewing 3 replies - 1 through 3 (of 3 total)
* Plugin Author [5 Star Plugins (Rob)](https://wordpress.org/support/users/5starplugins/)
* (@5starplugins)
* [6 years, 1 month ago](https://wordpress.org/support/topic/valid-rss-feed-but-namespace-errors/#post-12705276)
* Hi there,
* Happy to help figure this out with you!
* The feed is validating ok, as seen by the Congratulations message. The other
warnings are usually ignored, and I don’t see them being caused by our plugin.
* I do see the images in the raw RSS feed, so our plugin is working and doing what
it should.
* So, can you let me know what stopped working exactly? Any error messages, what
you’re using with the RSS feed?
* Thread Starter [honjoren](https://wordpress.org/support/users/honjoren/)
* (@honjoren)
* [6 years, 1 month ago](https://wordpress.org/support/topic/valid-rss-feed-but-namespace-errors/#post-12712867)
* Hello,
* Thank you for your answer. Nothing is stopping to work with; I just had this
concern about the warnings since I wasn’t aware of its severity.
* Regards
* Plugin Author [5 Star Plugins (Rob)](https://wordpress.org/support/users/5starplugins/)
* (@5starplugins)
* [6 years, 1 month ago](https://wordpress.org/support/topic/valid-rss-feed-but-namespace-errors/#post-12723557)
* Ah ok, thank you, glad it’s working well. Reach out if we can help in the future.
Viewing 3 replies - 1 through 3 (of 3 total)
The topic ‘Valid RSS feed, but namespace errors’ is closed to new replies.
* 
* [Featured Images in RSS for Mailchimp & More](https://wordpress.org/plugins/featured-images-for-rss-feeds/)
* [Frequently Asked Questions](https://wordpress.org/plugins/featured-images-for-rss-feeds/#faq)
* [Support Threads](https://wordpress.org/support/plugin/featured-images-for-rss-feeds/)
* [Active Topics](https://wordpress.org/support/plugin/featured-images-for-rss-feeds/active/)
* [Unresolved Topics](https://wordpress.org/support/plugin/featured-images-for-rss-feeds/unresolved/)
* [Reviews](https://wordpress.org/support/plugin/featured-images-for-rss-feeds/reviews/)
* 3 replies
* 2 participants
* Last reply from: [5 Star Plugins (Rob)](https://wordpress.org/support/users/5starplugins/)
* Last activity: [6 years, 1 month ago](https://wordpress.org/support/topic/valid-rss-feed-but-namespace-errors/#post-12723557)
* Status: resolved