wlcdesigns / latest-posts Goto Github PK

hello, I'm actually doing a project for my studies, and I needed to add the lastest post on my website, but there is a mistake on the validator. Any chance you can correct it ? Or maybe the mistake come from my part ?
Thank you very much for taking a look at it. It's the first time for me I use gihub, I don't really know if it's the best place for this post. The error is the next one :

"Error: Element div not allowed as child of element span in this context. (Suppressing further errors from this subtree.)
From line 213, column 39; to line 213, column 100
class="">

Hi!
Is it mandatory to use https instead of http?

I tested your source and works fine with https://wlcdesigns.com/wp-json/wp/v2/posts/ but nothing is shown with http://www.mysite.fr/wp-json/wp/v2/posts/

It is stuck on "loading"

Thanks

Philippe