Error when saving counters as synched pattern

Great plugin! Does just what I need. The only bugaboo is that I set up a block of counters that I am using on several different pages on my site – I tried to save my counters as a synched pattern and immediately got this error: https://react.dev/errors/185?invariant=185

I also tried to save the container that holds the counters as a synched pattern (with the counters inside the container) – that did not kick out an error, but the browser tab freezes and goes completely inert (nothing works). When I check the patterns area, the pattern is created can view it, but when I try to insert it into a page, the browser tab freezes like above.

It would be nice to be able to create a synched pattern containing counters. Any advice?

TY