All installers related to blizzard/battle.net are broken for me because a host in the installer script (djazz.se) is down.
DEBUG 2018-01-02 19:40:11,355 [installgamedialog]:Downloading http//djazz.se/nas/games/Battle.net.config to /home/user/.cache/lutris/installer/battlenet/Battle.net.config
DEBUG 2018-01-02 19:40:11,356 [downloader]:Starting download of:
http//djazz.se/nas/games/Battle.net.config
ERROR 2018-01-02 19:40:41,564 [http]:Unable to connect to server (http//djazz.se/nas/games/Battle.net.config): timed out