[Resolved] Checkout conflict with wpml

Problem:
The client is experiencing an issue where, after completing a checkout on their WooCommerce site with the WPML Multilingual CMS plugin activated, an error message appears, and the user is not redirected to the 'Thank You' page. However, the order is placed successfully, and the confirmation email is received. The issue does not occur when the WPML plugin is deactivated.
Solution:
We recommend the following steps to troubleshoot and potentially resolve the issue:
1. Confirm that all WPML and WooCommerce plugins, as well as your theme, are updated to their latest versions.
2. If the issue persists after updates, disable all plugins except for WPML and WooCommerce to check if the issue still occurs.
3. Test the checkout process with a new product.
4. Enable WordPress debugging to identify any specific errors related to WPML. To do this:
- Edit the

wp-config.php

file and add the following lines before the comment '/* That's all, stop editing! Happy publishing. */':

define('WP_DEBUG', true);
define('WP_DEBUG_LOG', true);
define('WP_DEBUG_DISPLAY', false);

- Reproduce the issue and then check the

debug.log

file in the /wp-content/ directory for any WPML-related errors.
5. Share the full error message from the debug log with us for further analysis.

If these steps do not resolve the issue, or if the solution seems outdated or irrelevant to your case, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix,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 further assistance is needed, please open a new support ticket at WPML support forum.