Error: AWStats database directory defined in config file by 'DirData' parameter (/srv/www/htdocs/web24/html/cgi-bin/awstats_log) does not exist or is not writable.

Setup ('./awstats.www.namibia-cd.com.conf' file, web server or permissions) may be wrong.
Check config file, permissions and AWStats documentation (in 'docs' directory).