Huh. So the Gorilla project went into archive-only mode in 2022. The gorilla/sessions project opened an issue asking for a new maintainer, this issue was closed as "stale", and a final comment was added indicating that the project is archived: github.com/gorilla/sessions/is

The Gorilla project website, however, states that as of July 2023, a new maintainer has been identified, and the gorilla/mux project is seeing recent commits, so hopefully the same maintainers are also managing gorilla/sessions. The gorilla/sessions CI automation is failing with a bad credential and it looks like the sessions project specifically hasn't seen much love lately.

Looks like quite a few projects are using session.FilesystemStore: github.com/search?q=sessions.N