Use Mautic’s world configuration to paste in the DSN facts, Specifically the API keys and passwords. The values should be URL-encoded, as well as the configuration form does that for you personally. Should you be pasting DSN options specifically in the config/local.php file, you will need to URL-encode the values https://mautic-installation-cpane00000.tdlwiki.com/773630/mautic_update_service_fundamentals_explained