Heroku doesn't like some of this

[julian45]

Hey there! I was trying to push my blog with this theme installed over to Heroku, and I got the following error:

remote: Git submodules detected, installing:
remote: No submodule mapping found in .gitmodules for path '.themes/fabric'
remote: 
remote: !   Push rejected, submodule install failed
remote: 
To https://git.heroku.com/[mysite].git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/[mysite].git'

What's going on here? It may have noticed submodules in other themes I have downloaded, so I'll double-check that.

[julian45]

Update: I tried running git submodule deinit * in the .themes directory of the blog, and it still spat out the following:

No submodule mapping found in .gitmodules for path '.themes/fabric'