Problem: If you're experiencing a crash when accessing the WPML settings in the backend of your WordPress site, accompanied by a critical error message and PHP Fatal errors indicating issues with user capabilities or roles, this might be due to custom roles lacking necessary capabilities. Solution: 1. Temporarily disable any non-essential plugins to simplify troubleshooting. 2. Navigate to Users->Roles & Capabilities. 3. Check for roles that have no capabilities. You can either delete these roles or assign at least one capability to them. 4. Re-enable the plugins once the issue is resolved.
If this solution does not resolve your issue or seems outdated, we recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have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.