asterisk - AsteriskNOW-3.0.0-i386 'system admin' Module is not updating -

asterisknow-3.0.0-i386

while updating 'system admin' module getting following error:

system admin cannot installed:

php component zend guard loader required missing php installation. file /usr/sbin/incrond must exist. 

please try again after dependencies have been installed.

search package php-zend-guard-loader on website pkgs