JS Issue

I am having an issue with my IDX plugin that causes the page to not fully load. My plugin author looked and stated the issue it with the theme. I was told:

Yes, http://fellerealestate.com/wp-content/themes/fortuna/js/libs.min.js and it’s causing the error “Uncaught TypeError: Cannot read property ‘offsetParent’ of null”. That error is stopping all subsequent Javascript from running on the page, including our widget.

You can recreate the issue by trying to load an of the listing on http://fellerealestate.com/listings/ in a new tab.