Problem: The client reported that the WPML database schema was not up-to-date, with missing tables such as wp_icl_background_task and missing fields in wp_icl_translation_status. Solution: We compared the client's database with a fresh WPML install and identified missing tables and fields. We executed SQL commands to create the missing tables and alter existing ones to add the necessary fields. After applying these changes, the database issues related to WPML were resolved. However, we cannot guarantee that other tables from core or other plugins were not affected.
If this solution does not resolve your issue or seems irrelevant due to being outdated or not applicable to your case, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent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 the problem persists, please open a new support ticket.
