Problem: The client is experiencing a critical error when trying to modify the translation of attributes in a WooCommerce product variation type. The error occurs on the translation screen, with a specific error message indicating a type error in the WooCommerce Multilingual plugin. Solution: We resolved the issue by fixing a small problem in the database and setting the site to a minimal setup. This setup involved deactivating all plugins except for the WPML ones and WooCommerce, and switching to a default WordPress theme. We recommend the client to try reproducing the error on a staging site. If the error does not appear, the client should reactivate the theme and then the other plugins one by one to identify the problematic plugin.
If this solution does not resolve the issue or seems outdated, please check the related known issues and ensure you have the latest versions of themes and plugins installed. If problems persist, we highly recommend opening a new support ticket at WPML support forum for further assistance.
