Wow, I am surprised to see this on the front page of HN. I was one of the main maintainers of OpenFarm back when I was part of FarmBot. As some folks in the comments have already mentioned, the project is unfortunately not actively maintained.
Although it is not actively maintained I would not say that the project is dead since it is still used as part of FarmBot for crop information management.
The biggest thing the project needs right now is a dependency upgrade above all else. It is running an old version of Rails/Mongoid/Angular 1.x. Folks who are interested in reviving this project should absolutely reach out to the current maintainers (I am no longer involved).