Problem: The client is experiencing a PHP fatal error when trying to save an options page in Polish and German languages using WPML and ACF Pro. The error message indicates an issue with illegal offset type in isset or empty, which is not directly caused by ACF but by how WPML interacts with ACF's low-level filters. Solution: We have identified that removing the options
options_nl_groep_voor_sociallinks
and
options_pl_groep_voor_sociallinks
from the
wp_options
table resolves the issue. It is crucial to back up the database before proceeding with this solution to prevent any data loss. This action should stop the fatal error from occurring when updating the options pages in the affected languages.
If this solution does not resolve your issue, or if it seems outdated or irrelevant to your case, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix,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 problems persist, please open a new support ticket at WPML support forum for further assistance.
