Visual Composer issues

Hi. First off – Shapely is is amazing! The parallax sections are unmatched.

Now to my issue. I’ve used Visual Composer for many years without problem. But recently if I load a VC page to do an update, it renders as a blank (only the header and footer show). A look at the error log indicates:

Warning : The magic method Shapely_Related_Posts::__wakeup() must have public visibility in /home/thoewi/ on line 89

Again, I have used VC without any problem for quite sometime. This is not a plugin conflict, since the problem also exists whith all plugins (except VC) deactivated.

Any thoughts, besides abandoning VC and re-do all the pages with something like Elementor (which works fine)?