[تم الحل] WooCommerce Multilingual & Multicurrency Not responde

Background of the issue:
I am working on a site under development and trying to change the language of a product using WooCommerce Multilingual & Multicurrency.

Symptoms:
The WooCommerce Multilingual & Multicurrency plugin is not responding and shows an error when I try to change the language of a product.

Questions:
Why is WooCommerce Multilingual & Multicurrency not responding when I try to change the product language?
How can I resolve the error shown by WooCommerce Multilingual & Multicurrency?