Problem: The client is experiencing an error message 'wp-nav-menus/class-wpml-nav-menu.php on line 566' when trying to manage menus in the WordPress dashboard after transitioning to a new theme. Solution: We recommend the client to first ensure that their website's database is backed up to prevent data loss. Then, to diagnose the issue, we suggest temporarily activating a default WordPress theme to check if the error persists. This step helps determine whether the problem is specific to the new theme or related to WPML. If the error is resolved with a default theme, it indicates an incompatibility with the new theme. If the issue continues, further investigation is needed.
If this solution does not seem relevant or if the problem persists, please open a new support ticket with us.
