Decoding failed: Syntax error

#0 /var/www/templatemonster-53174.magento-demo.ru/app/code/local/Df/Localization/Model/Realtime/Dictionary.php(356): Zend_Json::decode('')
#1 /var/www/templatemonster-53174.magento-demo.ru/app/code/local/Df/Localization/Model/Realtime/Dictionary.php(32): Df_Localization_Model_Realtime_Dictionary->hasEntry('Empty')
#2 /var/www/templatemonster-53174.magento-demo.ru/app/code/local/Df/Localization/Model/Realtime/Translator.php(41): Df_Localization_Model_Realtime_Dictionary->translate('Empty', 'Mage_Page::Empt...')
#3 /var/www/templatemonster-53174.magento-demo.ru/app/code/local/Df/Core/Model/Translate.php(416): Df_Localization_Model_Realtime_Translator->translate('Empty', 'Mage_Page::Empt...')
#4 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Core/Model/Translate.php(401): Df_Core_Model_Translate->_getTranslatedString('Empty', 'Mage_Page::Empt...')
#5 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Core/Helper/Abstract.php(186): Mage_Core_Model_Translate->translate(Array)
#6 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Page/Model/Config.php(77): Mage_Core_Helper_Abstract->__('Empty')
#7 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Page/Model/Config.php(56): Mage_Page_Model_Config->_appendPageLayouts('global/page/lay...')
#8 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Page/Model/Config.php(106): Mage_Page_Model_Config->_initPageLayouts()
#9 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Page/Helper/Layout.php(44): Mage_Page_Model_Config->getPageLayout('one_column')
#10 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Cms/Helper/Page.php(104): Mage_Page_Helper_Layout->applyHandle('one_column')
#11 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Cms/Helper/Page.php(52): Mage_Cms_Helper_Page->_renderPage(Object(Mage_Cms_IndexController), 'home')
#12 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Cms/controllers/IndexController.php(45): Mage_Cms_Helper_Page->renderPage(Object(Mage_Cms_IndexController), 'home')
#13 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Mage_Cms_IndexController->indexAction()
#14 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('index')
#15 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#16 /var/www/templatemonster-53174.magento-demo.ru/app/code/core/Mage/Core/Model/App.php(365): Mage_Core_Controller_Varien_Front->dispatch()
#17 /var/www/templatemonster-53174.magento-demo.ru/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#18 /var/www/templatemonster-53174.magento-demo.ru/index.php(84): Mage::run('', 'store')
#19 {main}