When using a software for Course Registration, I get the following error:

0 Too few arguments to function PlgContentSppagebuilder::onContentPrepare(), 3 passed in /home/*/libraries/src/Plugin/CMSPlugin.php on line 285 and exactly 4 expected

Regardless of the template (Magnin used here) the outcome is the same.

What is going on?

Joomla 4.1.2, Magnin, SPPageBuilder 3.8.6

Pat