خطا در تنظيمات كامپوننت com_zoom (زوم گالري)

[balal]

سلام
من زوم رو نصب كردم بعد از نصب وقتي وارد تنظيمات ميشم اين ارورها نمايش داده ميشه:

Warning: exec() has been disabled for security reasons in /home/halzicom/public_html/components/com_zoom/classes/toolbox.class.php on line 692

Warning: exec() has been disabled for security reasons in /home/halzicom/public_html/components/com_zoom/classes/toolbox.class.php on line 698

Warning: exec() has been disabled for security reasons in /home/halzicom/public_html/components/com_zoom/classes/toolbox.class.php on line 704

Warning: exec() has been disabled for security reasons in /home/halzicom/public_html/components/com_zoom/classes/toolbox.class.php on line 710

مشكل از كجاست ؟