joniL

Problem:
In WooCommerce Multilingual & Multicurrency version 5.3.5, there is an issue with

array_filter

being called with a value that could be a string or an array, as returned by

WCML_Editor_UI_Product_Job::get_custom_field_values()

. In PHP 8+, this results in a fatal error because

array_filter

expects an array, not a string.
Solution:
We recommend applying the workaround described on the errata page. Please visit the following link for detailed instructions: Advanced Custom Fields PHP Fatal Error.

If this solution does not apply to your situation, or if it's outdated, we suggest opening a new support ticket. We also 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. For further assistance, please contact us through the WPML support forum.