I´m working in a dev project for a Wordpress-Site.

While using Wordpress Widgets, sometimes my website creates strange mistakes. The website is just white an no Content is visible in the front (backend-access is possible).

While using the rightlick - Explore I get the following hint in the following mistake:

Uncaught TypeError: $t.find(...).foxlazy is not a function

This is the URL which produces the mistake:

https://nova.ow-media.de/aa/

Is someone there who can give me an hint how to fix this?

Thanks a lot!