Recent Posts Not Showing In Widget

I am working on a site: https://www.tronmusic.com/. However, the recent posts are not showing up in the recent posts widget. I have disabled it for now because the site is live. The widget is there, but the content that should be contained within, is not.

It’s not a plugin conflict. I already tried deactivating them all, but no dice.

Any help would be gratefully appreciated. Thanks. ??