Use Mautic’s world-wide configuration to stick from the DSN info, In particular the API keys and passwords. The values need to be URL-encoded, and also the configuration form does that for yourself. For anyone who is pasting DSN options directly to the config/community.php file, you should URL-encode the values oneself. https://install-mautic88888.wikidirective.com/6779918/the_definitive_guide_to_install_mautic