The open-source (self-hosted) version of Fathom is dead. The only commits they have been pushing to it in the last 12 months have been upsells for their closed-source & centralized paid offering.
Agreed. They were super nice on their GitHub issues about removing cookies as a requirement (required on mobile) and then it was released to non open source. Don't use Fathom if you don't want to pay. I made that mistake for home projects.