plugin causing WSOD

Hi,

I’ve been running a website with the Hestia (free) theme since the early 2023, and have had the YITH catalog mode and YITH ajax product filter plugins running since the beginning.

However, a couple of weeks ago, these two plugins both have been causing a fatal error on the shop (catalog) page of the website. If I disable both of these plugins, the website is fine again. Enabling only either one also causes the error.

WordPress, the theme and the plugins are up to date, and the catalog mode plugin has even had a new update release since the error occurred, but no change.

Is there anything I can do?

Kind regards

The page I need help with: [log in to see the link]