Problem: No web statistics were generated, only a place holder shown under /plesk-stat/webstat.
Generating the stats manually suceeded:
/usr/local/psa/admin/sbin/statistics
or
/usr/local/psa/admin/sbin/statistics –calculate-one –domain-name=domain.com
The latter one returned an error for an unknown parameter.
Because the statistics job was run fine, I assume that domain parameters are correctly set. There must be a Plesk-global problem that statistics are not run automatically.
More here:
http://pearlin.info/updating-stats-on-plesk/