Could not save database settings
Install wizard shows installWizard.errors.saveDbFailed when saving/testing database settings fails.
Why this happens
Wrong host/port/user/password/db name, unreachable Postgres, or inability to write .env. Related: Could not connect to the database, Could not write the .env file — check that the app folder is writable.
Diagnose and fix
1. Recheck PostgreSQL credentials from the hosting panel.
2. Ensure the app can reach the DB host/port.
3. Confirm the app folder is writable for .env.
4. See First-run install wizard / Troubleshooting a failed install.