face-name/fontset-name in TextSymbolizer in style 'area-text' + osm.xm


I am trying to render maps using mapnik2. the details of my environment are:
OS : CentOS 5.6 64 bit
python : 2.6
mapnik : compiled from SVN - mapnik2
OSM Data : Planet
DB Name : OSM
DB Username : map-admin

I generated the xml as python26 generate_xml.py --host localhost --user mapadmin --dbname osm --symbols ./symbols/ --world_boundaries ./world_boundaries/ --port 5432 --password ‘password’

When I try to generate maps by python26 generate_image.py , I get the following errors

I am following the guide http://wiki.openstreetmap.org/wiki/Mapnik#Rendering_with_Mapnik and have not compiled / modified anything

How to resolve this ?