02/11/2014 - LINUX
This error often occurs when the system ran out of memory while running a PHP application in terminal. To solve the problem do the following.
Set memory_limit
to "-1" (unlimited) in ini files.
sudo nano /etc/php5/apache2/php.ini
sudo nano /etc/php5/cli/php.ini
sudo nano /etc/php5/fpm/php.ini
memory_limit=-1