Error: AWStats database directory defined in config file by 'DirData' parameter (/home/groups/a/aw/awstats/data) does not exist or is not writable.

Setup ('/home/project-web/awstats/cgi-bin/awstats.awstats.sourceforge.net.conf' file, web server or permissions) may be wrong.
Check config file, permissions and AWStats documentation (in 'docs' directory).