Location of GeoLite2 City binary data file. This file is not part of Moodle distribution and must be obtained separately from <a href="http://www.maxmind.com/">MaxMind</a>. You can either buy a commercial version or use the free version. Simply download <a href="http://geolite.maxmind.com/download/geoip/database/GeoLite2-City.mmdb.gz" >http://geolite.maxmind.com/download/geoip/database/GeoLite2-City.mmdb.gz</a> and extract it into "{$a}" directory on your server.