Cron does not execute PHP script

I believe I configured the cron correctly under ISPConfig 3 >> Sites >> Cron Jobs. Because when I open the syslog I can see the following line:

The cpu.php will send me an email if meet certain condition. The script works perfectly if I run using command line:

Anyone know what i'm missing here?

 

can you output the according cron job located in /etc/cron.d

named: ipsc_(chrooted)_webXX

 

Here it is: