Brandnew PLESK 7.5.2 makes error: stat of /var/log/ppp/connect-errors failed

[editor]

Brandnew PLESK 7.5.2 makes error: stat of /var/log/ppp/connect-errors failed

/etc/cron.daily/00webalizer:

Error: Skipping oversized log record
Error: Skipping oversized log record
Error: Skipping oversized log record
Error: Skipping oversized log record
Error: Skipping oversized log record
Error: Skipping oversized log record
Error: Skipping oversized log record
Error: Skipping oversized log record
Error: Skipping oversized log record
/etc/cron.daily/logrotate:

error: stat of /var/log/ppp/connect-errors failed: No such file or directory

I don't understand this. The PLESK-server is brandnew.
What can this be? Thank you very much.