Problem: The client is experiencing a fatal error on their WordPress site related to WPML during autosave/admin-ajax requests. The error occurs when WordPress triggers autosave via wp-admin/admin-ajax.php (heartbeat), and WPML attempts to load a translation entry for a specific TRID but fails because the entry is missing. Additionally, there have been issues with translations merging incorrectly, suggesting possible corruption or inconsistency in WPML translation tables. Solution: We recommend updating WPML to the latest version (4.9.2), which includes many fixes for known issues. You can update WPML via Plugins->Add new->Commercial tab. After updating, please go to WPML->Support->Troubleshooting and run the following actions:
Clear WPML Cache
Remove Ghost Entries in translation tables
Fix element_type collation
Fix WPML tables collation
Set language information
Fix terms count
Fix post type assignments
Please check the changelog for more details: WPML Changelog
If these steps do not resolve the issue, or if the solution provided here becomes outdated or seems irrelevant to your case, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent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.
