You're executing the command using PHP version 4.4.9. That's a little out of date.
Sometimes the
Sometimes the
php
command is not going to call the correct version. You will need to ascertain what the correct path is to the desired version (will need to be PHP 5.6 if you're running XF 2.1 or PHP 7.0 if you're running XF 2.2) and run the command again.