Problem: The client encountered a fatal error related to the WPML plugin and other associated plugins, which was identified through error logs indicating issues with non-countable or null array types in specific PHP files. Solution: We recommended updating the WPML plugin and its add-ons to the latest version, specifically to version 4.6.12, to incorporate the latest bug fixes and improvements. This update process includes checking for the latest versions under 'My Account -> Downloads' on the WPML site and following the update instructions available at http://wpml.org/faq/install-wpml/. Additionally, updating WordPress, other related plugins, and the current theme was advised. It is also important to backup the database before proceeding and to clear the log after updating to verify if the errors persist.
If this solution does not resolve the issue or seems irrelevant due to its nature or because it might be outdated, please check related known issues at https://wpml.org/known-issues/ and confirm that you have installed the latest versions of themes and plugins. If problems continue, we highly recommend opening a new support ticket for further assistance.
