[Resolved] Fatal error in WPML settings

Problem:
The client was experiencing an issue where the 'icl_sitepress_settings' key was not found in the 'wp_options' table of the database, which was needed to delete a file from the database.

Solution:
We recommended the client to follow the steps provided in our documentation to resolve the issue. Specifically, we directed them to our errata page that addresses a fatal error which can occur when visiting the WPML settings page. Here are the steps:

• Take a backup of the database.
• Go to the 'wp_options' table in the database.
• Search for the 'icl_sitepress_settings' key.
• If the key is not found, follow the instructions on our errata page: https://wpml.org/errata/fatal-error-uncaught-invalidargumentexception-item-should-be-a-collection-or-an-array-or-an-object-when-visiting-wpml-settings/
• After following the steps, check if the WPML settings page works correctly.

Please note that the solution provided might be outdated or not applicable to your case. If the issue persists, we highly recommend checking the related known issues, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If you still need assistance, please do not hesitate to open a new support ticket in the WPML support forum.