Scheduled Task created under the domain fails: "No such file or directory"

Hi, i have the sam problem wrote here:
Scheduled Task created under the domain fails: "No such file or directory"
(when run a crontab i receive "not such file or directory")

If i run this command:
grep SHELL /var/spool/cron/mywebsite

I receive:
SHELL=/usr/local/psa/bin/chrootsh

The guide tell me:
Find the specific set of utilities available in the...

Scheduled Task created under the domain fails: "No such file or directory"