#0 /home/piwik/www/demo.piwik.org/core/DataTable/Row.php(480): Piwik_DataTable_Row->sumRowArray('index', 'index')
#1 /home/piwik/www/demo.piwik.org/core/DataTable.php(452): Piwik_DataTable_Row->sumRow(Object(Piwik_DataTable_Row))
#2 /home/piwik/www/demo.piwik.org/core/ArchiveProcessing/Period.php(217): Piwik_DataTable->addDataTable(Object(Piwik_DataTable))
#3 /home/piwik/www/demo.piwik.org/core/ArchiveProcessing/Period.php(186): Piwik_ArchiveProcessing_Period->getRecordDataTableSum('Actions_actions', Array)
#4 /home/piwik/www/demo.piwik.org/plugins/Actions/Archiving.php(59): Piwik_ArchiveProcessing_Period->archiveDataTable(Array, Array, '500', '100', 2)
#5 /home/piwik/www/demo.piwik.org/plugins/Actions/Actions.php(431): Piwik_Actions_Archiving->archivePeriod(Object(Piwik_ArchiveProcessing_Period))
#6 [internal function]: Piwik_Actions->archivePeriod(Object(Piwik_Event_Notification))
#7 /home/piwik/www/demo.piwik.org/libs/Event/Dispatcher.php(284): call_user_func_array(Array, Array)
#8 /home/piwik/www/demo.piwik.org/core/PluginsManager.php(668): Event_Dispatcher->postNotification(Object(Piwik_Event_Notification), false, false)
#9 /home/piwik/www/demo.piwik.org/core/ArchiveProcessing/Period.php(273): Piwik_PostEvent('ArchiveProcessi...', Object(Piwik_ArchiveProcessing_Period))
#10 /home/piwik/www/demo.piwik.org/core/ArchiveProcessing.php(498): Piwik_ArchiveProcessing_Period->compute()
#11 /home/piwik/www/demo.piwik.org/core/Archive/Single.php(226): Piwik_ArchiveProcessing->launchArchiving()
#12 /home/piwik/www/demo.piwik.org/core/Archive/Single.php(256): Piwik_Archive_Single->prepareArchive()
#13 /home/piwik/www/demo.piwik.org/core/Archive/Single.php(447): Piwik_Archive_Single->get('Actions_nb_page...', 'numeric')
#14 /home/piwik/www/demo.piwik.org/core/Archive/Single.php(490): Piwik_Archive_Single->getNumeric('Actions_nb_page...')
#15 /home/piwik/www/demo.piwik.org/plugins/Actions/API.php(108): Piwik_Archive_Single->getDataTableFromNumeric(Array)
#16 /home/piwik/www/demo.piwik.org/plugins/VisitsSummary/Controller.php(117): Piwik_Actions_API->get('7', 'range', '2009-01-16,2012...', false)
#17 /home/piwik/www/demo.piwik.org/plugins/VisitsSummary/Controller.php(24): Piwik_VisitsSummary_Controller->setSparklinesAndNumbers(Object(Piwik_View))
#18 [internal function]: Piwik_VisitsSummary_Controller->index()
#19 /home/piwik/www/demo.piwik.org/core/FrontController.php(138): call_user_func_array(Array, Array)
#20 /home/piwik/www/demo.piwik.org/index.php(53): Piwik_FrontController->dispatch()