Problem: After installing WPML and activating it, an error message appeared in the WordPress admin indicating that the 'product_type' field was set incorrectly for some product translations due to the translation of the 'product_type' taxonomy. Solution: If you're experiencing this issue, we recommend setting the 'product_type' taxonomy to not translatable, as you have already done. Since the troubleshooting tools on the WooCommerce Multilingual & Multicurrency troubleshooting page did not resolve the issue, we suggest temporarily downgrading the WooCommerce Multilingual plugin to an older version to run the necessary troubleshooting tools. After completing these steps, you can update the plugin to the latest version again. You can find the old versions of the plugin here.
Please note that this solution might be outdated or not applicable to your specific case. We highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If the problem persists, please open a new support ticket.
