Code loading instead of Featured image

When I tried to load the feed in a theme with featured posts grid only the first post is loading in the grid.

So I changed to the Motive Mag theme. Then I found the html code of the feed is loading in place of the featured image when I use the feed from History blog.
History Blog feed

Here is the page:
http://learnunderstandcreate.com/erebus-summer-dive-season-goes-swimmingly/

Screenshot:
Post from the feed in my blog

And here is the pipe I used:
History Pipe

Same problem when I try to load feeds from InterestingEngineering.com and Howtogeek.com
How to Geek Post Screenshot

Please help me find the problem and let me know what to change to get the featured image to load properly.

https://wordpress.org/plugins/wp-pipes/