Here is the output when I use the command on command prompt;/home/ubuntu# /usr/bin/php -q /var/www/html/api/cron.phpPHP Warning: Declaration of AssignmentForm:($options) should be compatible with Form:($staff = true, $title = false, $options = Array) in /var/www/html/include/class.forms.php on line 4150PHP Stack trace:PHP 1. {main}() /var/www/html/api/cron.phpPHP 2. require() /var/www/html/api/cron.phpPHP 3. require_once() /var/www/html/api/api.inc.phpPHP 4. Bootstrap:() /var/www/html/main.inc.phpPHP 5. require() /var/www/html/bootstrap.phpPHP 6. require_once() /var/www/html/include/class.user.phpPHP Warning: Declaration of TransferForm:($options) should be compatible with Form:($staff = true, $title = false, $options = Array) in /var/www/html/include/class.forms.php on line 4270PHP Stack trace:PHP 1. {main}() /var/www/html/api/cron.phpPHP 2. require() /var/www/html/api/cron.phpPHP 3. require_once() /var/www/html/api/api.inc.phpPHP 4. Bootstrap:() /var/www/html/main.inc.phpPHP 5. require() /var/www/html/bootstrap.phpPHP 6. require_once() /var/www/html/include/class.user.phpPHP Fatal error: Uncaught Error: Call to undefined function mysqli_init() in /var/www/html/include/mysqli.phpStack trace:#0 /var/www/html/bootstrap.php(182): db_connect('localhost', 'root', '12345', Array)#1 /var/www/html/main.inc.php(28): Bootstrap:()#2 /var/www/html/api/api.inc.php(23): require_once('/var/www/html/m...')#3 /var/www/html/api/cron.php(17): require('/var/www/html/a...')#4 {main} thrown in /var/www/html/include/mysqli.php on line 28>>> I have allowed the both ports IMAP and POP3 for incoming access.>>> PHP-mysql is installed and mysqli is enabled.Not sure what I'm missing.