Error: awstats failed to create directory DirData (DirData="/home/wheelman/tmp/awstats/ssl", CreateDirDataIfNotExists=1).

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