Cannot Publish Atom Package

Hi all,

I’m having trouble publishing a GitHub repository as a package. I have permissions for the repository, yet I’m met with this vague error when publishing via apm publish minor

Registering reach-ide ✗
Registering package in reach-sh/atom-reach-ide repository failed: That repo does not exist, isn't an atom package, or you do not have access

The repository does exist, it is an atom package and I have access to it. It seems the repository field is a common issue with this error, but as far as I can tell it is correct. Any help in figuring out what is wrong is appreciated.