Warning: Missing argument 1 for Mage_Core_Block_Abstract::unsetChild(), called in /var/www/share/begadi.com/htdocs/app/code/core/Mage/Core/Model/Layout.php on line 348 and defined  in /var/www/share/begadi.com/htdocs/app/code/core/Mage/Core/Block/Abstract.php on line 478

#0 /var/www/share/begadi.com/htdocs/app/code/core/Mage/Core/Block/Abstract.php(478): mageCoreErrorHandler(2, 'Missing argumen...', '/var/www/share/...', 478, Array)
#1 /var/www/share/begadi.com/htdocs/app/code/core/Mage/Core/Model/Layout.php(348): Mage_Core_Block_Abstract->unsetChild()
#2 /var/www/share/begadi.com/htdocs/app/code/core/Mage/Core/Model/Layout.php(214): Mage_Core_Model_Layout->_generateAction(Object(Mage_Core_Model_Layout_Element), Object(Mage_Core_Model_Layout_Element))
#3 /var/www/share/begadi.com/htdocs/app/code/core/Mage/Core/Model/Layout.php(210): Mage_Core_Model_Layout->generateBlocks(Object(Mage_Core_Model_Layout_Element))
#4 /var/www/share/begadi.com/htdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(344): Mage_Core_Model_Layout->generateBlocks()
#5 /var/www/share/begadi.com/htdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(269): Mage_Core_Controller_Varien_Action->generateLayoutBlocks()
#6 /var/www/share/begadi.com/htdocs/app/code/core/Mage/CatalogSearch/controllers/ResultController.php(77): Mage_Core_Controller_Varien_Action->loadLayout()
#7 /var/www/share/begadi.com/htdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_CatalogSearch_ResultController->indexAction()
#8 /var/www/share/begadi.com/htdocs/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('index')
#9 /var/www/share/begadi.com/htdocs/app/code/core/Mage/Core/Controller/Varien/Front.php(175): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#10 /var/www/share/begadi.com/htdocs/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch()
#11 /var/www/share/begadi.com/htdocs/app/Mage.php(686): Mage_Core_Model_App->run(Array)
#12 /var/www/share/begadi.com/htdocs/index.php(83): Mage::run('', 'store')
#13 {main}