GA4 Analytics v1.2.0 is now available: https://www.zen-cart.com/downloads.php?do=file&id=2368

This release contains corrections for the following GitHub issues:

#11: Correct determination of products' information pages.
#12: Don't include a view_item event for invalid products.
#13: Need to load after currencies are instantiated, corrects PHP warning.
#14: Enable analytics to use either GA4 (gtag.js) or GTM (gtm.js) reporting.
#15: Don't log a PHP Warning if the required notification is missing.
#16: Include user_id for GTM reporting and enable site-specific customizations.
#17: Correct misspelling of item_name parameter for shopping-cart based items.