manfredR-5

Problem:
The client reported a fatal error caused by the WooCommerce Multilingual & Multicurrency plugin when trying to add a product to the cart on their WooCommerce site. The error message indicated an issue with calling a function on a null value within the WooCommerce Subscriptions plugin.

Solution:
1. We attempted to replicate the issue but were unable to do so. We requested a screen recording to better understand the problem and asked for FTP access for further troubleshooting.
2. We identified that the issue might be related to a known problem with WooCommerce payment details being displayed twice. We provided a workaround that can be found in our errata page: https://wpml.org/errata/woocommerce-payment-details-are-displayed-twice-on-the-order-confirmation-page-e-mail/.
3. We informed the client that the patch they applied will be included in the next official update of the WooCommerce Multilingual & Multicurrency plugin, ensuring that the patch will not be overwritten by future updates.

If this solution doesn't look relevant to your issue, please don't hesitate to open a new support ticket with us here: WPML support forum.