Of course, I added a backup of the website to the hidden content of this post.
I tried on another website and I don't see the errors, it only happens on this one.
It's not a template issue, because I tried with Cassiopeia as default and the errors are still present.
It seems to be a conflict within the Dynamic Content elements, if you check the blog pages, there are no errors, they are present only on pages with Dynamic Content elements.
If I add var $ = jQuery.noConflict(); to the dc-gallery-bxslider.js the errors are gone.