Hello,
Trying: sudo add-apt-repository ppa:voria/pp
Returns: Cannot access PPA (https://launchpad.net/api/1.0/~voria/+archive/pp) to get PPA information, please check your internet connection.
I've tried to access https://launchpad.net/api/1.0/~voria/+archive/pp with a browser, but get a 404 not found error.