Subproject error? Custom domain?

[jaredpalmer]

I am trying to deploy my local site and assign it a custom domain. I included a CNAME file in my app directory so it would copy over to my dist. However, when I deploy with grunt to the master I get this subproject error (see below) and then I can't deploy again unless I delete the repo and clone it again.

I have used this generator on main Github Pages before, but this is the first time I've assigned it a custom domain.

[dnozay]

git submodule update ?