What does your github directory look like?
Do you get the error after importing the whole project from VCS or trying to open a local existing copy?
After seeing this I am almost wondering if a new copy from github got pulled down into an existing project and now there are two of the same modules?
EDIT: After looking at your last push 5 hours ago, your merge messed up because it was pushing .idea folder and adding multiple modules
Normally the .idea folder is not pushed to get, so to avoid pulling down a bad copy in the future you can remove the .idea folder from github and make sure this is in your .gitignore
## Android Studio and Intellij and Android in general