[Resolved] PHP Fatal error: Uncaught ValueError: Missing format specifier at end of string

Problem:
If you're experiencing a critical error when switching your WooCommerce product page to a second language, it may be due to a translation issue with placeholders in your theme files.

Solution:
We found a fatal error related to incorrect placeholder translation in the theme file

/wp-content/themes/porto/inc/functions/wpb-elements.php

on line 1014. The correct format for translating placeholders like "%1$sarticle%2$s" should maintain the 's' after the dollar sign. If the 's' is missing, it will cause an error.

To resolve this, we recommend you:
1. Visit the WPML > String Translation section.
2. Search for the problematic string.
3. Re-translate it using the correct placeholder format.

For more information on translating placeholders, please refer to the WordPress documentation.

We have already fixed the issue for the reported instance, and the translated product should now display correctly on the front end.

If this solution doesn't look relevant to your issue, please open a new support ticket with us.