Fatal error: Uncaught Error: Unknown named parameter $lifetime in /usr/www/users/purnal/app/code/core/Mage/Core/Model/Session/Abstract/Varien.php:100
Stack trace:
#0 /usr/www/users/purnal/app/code/core/Mage/Core/Model/Session/Abstract/Varien.php(158): Mage_Core_Model_Session_Abstract_Varien->start('frontend')
#1 /usr/www/users/purnal/app/code/core/Mage/Core/Model/Session/Abstract.php(84): Mage_Core_Model_Session_Abstract_Varien->init('core', 'frontend')
#2 /usr/www/users/purnal/app/code/core/Mage/Core/Model/Session.php(39): Mage_Core_Model_Session_Abstract->init('core', 'frontend')
#3 /usr/www/users/purnal/app/code/core/Mage/Core/Model/Config.php(1208): Mage_Core_Model_Session->__construct(Array)
#4 /usr/www/users/purnal/app/Mage.php(432): Mage_Core_Model_Config->getModelInstance('core/session', Array)
#5 /usr/www/users/purnal/app/Mage.php(446): Mage::getModel('core/session', Array)
#6 /usr/www/users/purnal/app/code/core/Mage/Core/Controller/Varien/Action.php(488): Mage::getSingleton('core/session', Array)
#7 /usr/www/users/purnal/app/code/core/Mage/Core/Controller/Front/Action.php(59): Mage_Core_Controller_Varien_Action->preDispatch()
#8 /usr/www/users/purnal/app/code/core/Mage/Core/Controller/Varien/Action.php(407): Mage_Core_Controller_Front_Action->preDispatch()
#9 /usr/www/users/purnal/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(253): Mage_Core_Controller_Varien_Action->dispatch('index')
#10 /usr/www/users/purnal/app/code/core/Mage/Core/Controller/Varien/Front.php(176): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#11 /usr/www/users/purnal/app/code/core/Mage/Core/Model/App.php(304): Mage_Core_Controller_Varien_Front->dispatch()
#12 /usr/www/users/purnal/app/Mage.php(595): Mage_Core_Model_App->run(Array)
#13 /usr/www/users/purnal/index.php(80): Mage::run('', 'store')
#14 {main}
  thrown in /usr/www/users/purnal/app/code/core/Mage/Core/Model/Session/Abstract/Varien.php on line 100