Method "handleBlockAlert" is not defined in "Bss_OutOfStockNotification_Model_Observer"

#0 /home/militari/public_html/app/code/core/Mage/Core/Model/App.php(1340): Mage::throwException('Method "handleB...')
#1 /home/militari/public_html/app/code/core/Mage/Core/Model/App.php(1317): Mage_Core_Model_App->_callObserverMethod(Object(Bss_OutOfStockNotification_Model_Observer), 'handleBlockAler...', Object(Varien_Event_Observer))
#2 /home/militari/public_html/app/Mage.php(448): Mage_Core_Model_App->dispatchEvent('core_block_abst...', Array)
#3 /home/militari/public_html/app/code/core/Mage/Core/Block/Abstract.php(943): Mage::dispatchEvent('core_block_abst...', Array)
#4 /home/militari/public_html/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#5 /home/militari/public_html/app/code/core/Mage/Core/Block/Abstract.php(577): Mage_Core_Block_Abstract->_getChildHtml('js_cookies', true)
#6 /home/militari/public_html/app/design/frontend/meigeetheme/default/template/page/html/head.phtml(49): Mage_Core_Block_Abstract->getChildHtml()
#7 /home/militari/public_html/app/code/core/Mage/Core/Block/Template.php(241): include('/home/militari/...')
#8 /home/militari/public_html/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/meigee...')
#9 /home/militari/public_html/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#10 /home/militari/public_html/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#11 /home/militari/public_html/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#12 /home/militari/public_html/app/code/core/Mage/Core/Block/Abstract.php(581): Mage_Core_Block_Abstract->_getChildHtml('head', true)
#13 /home/militari/public_html/app/design/frontend/meigeetheme/default/template/page/3columns.phtml(29): Mage_Core_Block_Abstract->getChildHtml('head')
#14 /home/militari/public_html/app/code/core/Mage/Core/Block/Template.php(241): include('/home/militari/...')
#15 /home/militari/public_html/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/meigee...')
#16 /home/militari/public_html/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#17 /home/militari/public_html/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#18 /home/militari/public_html/app/code/core/Mage/Core/Model/Layout.php(555): Mage_Core_Block_Abstract->toHtml()
#19 /home/militari/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput()
#20 /home/militari/public_html/app/code/local/Sonassi/Wordpress/controllers/IndexController.php(55): Mage_Core_Controller_Varien_Action->renderLayout()
#21 /home/militari/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Sonassi_Wordpress_IndexController->indexAction()
#22 /home/militari/public_html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('index')
#23 /home/militari/public_html/app/code/community/BalkeTechnologies/StoreMaintenance/Controller/Router/Standard.php(91): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#24 /home/militari/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(172): BalkeTechnologies_StoreMaintenance_Controller_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#25 /home/militari/public_html/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#26 /home/militari/public_html/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#27 /home/militari/public_html/index.php(87): Mage::run('', 'store')
#28 {main}