Feedzy Error: Array ( [0] =>

Trying to show the feeds of several sites, and one site in particular is causing problems. As soon as I insert the feed for a particular site ( http://www.omichinski.com/ ), the widget on my website shows the following error: Array ( [0] =>

Here is a screenshot:

http://rpgspotlight.com/wp-content/uploads/2017/10/Feedzy.jpg

It only does this for this one particular site. I’m using the latest WP, I’ve deactivated all other plugins, I’ve tried other sites.

How can I get that site to display correctly?

Thanks for your time.

The page I need help with: [log in to see the link]