Notice: Array to string conversion  in /var/www/clients/client568/web1126/web/shop/app/code/community/EM/Em0131settings/Block/Html/Head.php on line 67

#0 [internal function]: mageCoreErrorHandler(8, 'Array to string...', '/var/www/client...', 67, Array)
#1 /var/www/clients/client568/web1126/web/shop/app/code/community/EM/Em0131settings/Block/Html/Head.php(67): array_diff_assoc(Array, Array)
#2 [internal function]: EM_Em0131settings_Block_Html_Head->addEMItem('lesscss', Object(Mage_Core_Model_Layout_Element))
#3 /var/www/clients/client568/web1126/web/shop/app/code/core/Mage/Core/Model/Layout.php(348): call_user_func_array(Array, Array)
#4 /var/www/clients/client568/web1126/web/shop/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))
#5 /var/www/clients/client568/web1126/web/shop/app/code/core/Mage/Core/Model/Layout.php(206): Mage_Core_Model_Layout->generateBlocks(Object(Mage_Core_Model_Layout_Element))
#6 /var/www/clients/client568/web1126/web/shop/app/code/core/Mage/Core/Model/Layout.php(206): Mage_Core_Model_Layout->generateBlocks(Object(Mage_Core_Model_Layout_Element))
#7 /var/www/clients/client568/web1126/web/shop/app/code/core/Mage/Core/Controller/Varien/Action.php(344): Mage_Core_Model_Layout->generateBlocks()
#8 /var/www/clients/client568/web1126/web/shop/app/code/core/Mage/Catalog/controllers/CategoryController.php(148): Mage_Core_Controller_Varien_Action->generateLayoutBlocks()
#9 /var/www/clients/client568/web1126/web/shop/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Catalog_CategoryController->viewAction()
#10 /var/www/clients/client568/web1126/web/shop/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('view')
#11 /var/www/clients/client568/web1126/web/shop/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#12 /var/www/clients/client568/web1126/web/shop/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch()
#13 /var/www/clients/client568/web1126/web/shop/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#14 /var/www/clients/client568/web1126/web/shop/index.php(84): Mage::run('', 'store')
#15 {main}