Excuse my late response, but I was monitoring the site’s behaviour.
@admin. Thank you for your response. It helped me to narrow down the problem.
It seems that the culprit was an option inside the Plesk panel and under the security tab.
“Disable PHP execution in cache directories.” This was preventing the cached scripts from running properly, including woocommerce init. So if a widget was asking for a price tag in all products, the query was returning null.
It might be something else in another case, but for this one, when I disabled this, the error disappeared on the same setup, with no updates occurring on the plugin.
Appreciate the help that you provided on the matter. You may close the ticket.
Best Regards
