Exception information:

array_filter(): Argument #1 ($array) must be of type array, null given

Stack trace:

#0 /home/robotex/web/robotex.org.cy/public_html/application/controller/helpers/System.php(2051): array_filter()
#1 /home/robotex/web/robotex.org.cy/public_html/application/controller/ResultsController.php(774): Zend_Controller_Action_Helper_System->getMultipleTimesResults()
#2 /home/robotex/web/robotex.org.cy/public_html/Zend/Controller/Action.php(522): ResultsController->showAction()
#3 /home/robotex/web/robotex.org.cy/public_html/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch()
#4 /home/robotex/web/robotex.org.cy/public_html/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch()
#5 /home/robotex/web/robotex.org.cy/public_html/index.php(238): Zend_Controller_Front->dispatch()
#6 {main}					

Request Parameters:

array (
  'controller' => 'results',
  'action' => 'show',
  'profile' => 'best-of-the-best',
  'challenge' => '37',
  'module' => 'default',
  'lang' => 'el',
)