Malformed version error publishing build artifacts with plugins/gitea-release

When I try to deploy with the gitea-release plugin, I get this strange error. I am indeed using gitea v1.16 built from branch release/v1.16 which is why I am assuming it is reporting that version information. Any idea what it is choking on or how I could resolve it?

latest: Pulling from plugins/gitea-release
Digest: sha256:9638504c1f3600332bd0f4272db11cc20fa7f6c1e7d00efbf89eea4fad263d90
Status: Image is up to date for plugins/gitea-release:latest
time="2022-04-26T17:57:44Z" level=fatal msg="Malformed version: release/v1.16"