Server Error on Product Pages: Only arrays and Traversables can be unpacked

[EvanGR]

Hello,

On some product pages, I am getting an error page with the following message:

"0
Only arrays and Traversables can be unpacked"

The first character is a zero.

It's only on some products. I don't see any peculiarity with the affected products compared to the rest. How do I troubleshoot this?

Thanks

[Joomla 3.9.27 | VM 3.8.8 10472 | PHP 7.4.latest]

[GJC Web Design]

1st obtain the full error trace..