Notice: Array to string conversion  in /home/devvoice/domains/voice-amplifier.com/public_html/app/code/core/Mage/Core/Model/Layout.php on line 555

#0 /home/devvoice/domains/voice-amplifier.com/public_html/app/code/core/Mage/Core/Model/Layout.php(555): mageCoreErrorHandler(8, 'Array to string...', '/home/devvoice/...', 555, Array)
#1 /home/devvoice/domains/voice-amplifier.com/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput()
#2 /home/devvoice/domains/voice-amplifier.com/public_html/app/code/core/Mage/Catalog/controllers/CategoryController.php(161): Mage_Core_Controller_Varien_Action->renderLayout()
#3 /home/devvoice/domains/voice-amplifier.com/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Catalog_CategoryController->viewAction()
#4 /home/devvoice/domains/voice-amplifier.com/public_html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('view')
#5 /home/devvoice/domains/voice-amplifier.com/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#6 /home/devvoice/domains/voice-amplifier.com/public_html/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#7 /home/devvoice/domains/voice-amplifier.com/public_html/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#8 /home/devvoice/domains/voice-amplifier.com/public_html/index.php(87): Mage::run('', 'store')
#9 {main}