/scripts/runweblogs
Check the stats after run the scripts. If the error still persists
vi /var/cpanel/cpanel.conf then edit the extracpus=0 to 2
Then execute /usr/local/cpanel/startup
After this, run the above scripts ... it will update the awstats.
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This problem may occur when apache log files are over 2GB in size and new logs won't update. The best way to prevent this to delete domain logs from the following path
/usr/local/apache/domlogs/yourdomain.com.log