Error: Data structure returned is not convertible in the requested format. Try to call this method with the parameters '&format=original&serialize=1'; you will get the original php data structure serialized. The data structure looks like this: $data = array ( 'website' => 'koeln-nachrichten.de', 'prettyDate' => '20 Mar 24 - 29 Mar 24', 'metadata' => array ( 'category' => 'Visitors', 'name' => 'Country', 'module' => 'UserCountry', 'action' => 'getCountry', 'dimension' => 'Country', 'metrics' => array ( 'nb_visits' => 'Visits', 'nb_uniq_visitors' => 'Unique visitors', 'nb_actions' => 'Actions', ), 'processedMetrics' => array ( 'nb_actions_per_visit' => 'Actions per Visit', 'avg_time_on_site' => 'Avg. Time on Website', 'bounce_rate' => 'Bounce Rate', ), 'metricsDocumentation' => array ( 'nb_visits' => 'If a visitor comes to your website for the first time or if he visits a page more than 30 minutes after his last page view, this will be recorded as a new visit.', 'nb_uniq_visitors' => 'The number of unduplicated visitors coming to your website. Every user is only counted once, even if he visits the website multiple times a day.', 'nb_actions' => 'The number of actions performed by your visitors. Actions can be page views, downloads or outlinks.', 'nb_actions_per_visit' => 'The average number of actions (page views, downloads or outlinks) that were performed during the visits.', 'avg_time_on_site' => 'The average duration of a visit.', 'bounce_rate' => 'The percentage of visits that only had a single pageview. This means, that the visitor left the website directly from the entrance page.', 'conversion_rate' => 'The percentage of visits that triggered a goal conversion.', 'avg_time_on_page' => 'The average amount of time visitors spent on this page (only the page, not the entire website).', 'nb_hits' => 'The number of times this page was visited.', 'exit_rate' => 'The percentage of visits that left the website after viewing this page.', ), 'metricsGoal' => array ( 'nb_conversions' => 'Conversions', 'revenue' => 'Revenue', ), 'processedMetricsGoal' => array ( 'revenue_per_visit' => 'Revenue per Visit', ), 'imageGraphUrl' => 'index.php?module=API&method=ImageGraph.get&idSite=1&apiModule=UserCountry&apiAction=getCountry&token_auth=anonymous&graphType=verticalBar&period=range&date=last10', 'uniqueId' => 'UserCountry_getCountry', ), 'columns' => array ( 'label' => 'Country', 'nb_visits' => 'Visits', 'nb_uniq_visitors' => 'Unique visitors', 'nb_actions' => 'Actions', 'nb_actions_per_visit' => 'Actions per Visit', 'avg_time_on_site' => 'Avg. Time on Website', 'bounce_rate' => 'Bounce Rate', 'revenue' => 'Revenue', ), 'reportData' => Piwik_DataTable_Array::__set_state(array( 'metadata' => array ( '2024-03-20' => array ( 'timestamp' => 1710892800, 'site' => Piwik_Site::__set_state(array( 'id' => '1', )), 'period' => Piwik_Period_Day::__set_state(array( 'label' => 'day', 'subperiods' => array ( ), 'subperiodsProcessed' => true, 'date' => Piwik_Date::__set_state(array( 'timestamp' => 1710953282, 'timezone' => 'UTC', )), )), ), '2024-03-21' => array ( 'timestamp' => 1710979200, 'site' => Piwik_Site::__set_state(array( 'id' => '1', )), 'period' => Piwik_Period_Day::__set_state(array( 'label' => 'day', 'subperiods' => array ( ), 'subperiodsProcessed' => true, 'date' => Piwik_Date::__set_state(array( 'timestamp' => 1711039682, 'timezone' => 'UTC', )), )), ), '2024-03-22' => array ( 'timestamp' => 1711065600, 'site' => Piwik_Site::__set_state(array( 'id' => '1', )), 'period' => Piwik_Period_Day::__set_state(array( 'label' => 'day', 'subperiods' => array ( ), 'subperiodsProcessed' => true, 'date' => Piwik_Date::__set_state(array( 'timestamp' => 1711126082, 'timezone' => 'UTC', )), )), ), '2024-03-23' => array ( 'timestamp' => 1711152000, 'site' => Piwik_Site::__set_state(array( 'id' => '1', )), 'period' => Piwik_Period_Day::__set_state(array( 'label' => 'day', 'subperiods' => array ( ), 'subperiodsProcessed' => true, 'date' => Piwik_Date::__set_state(array( 'timestamp' => 1711212482, 'timezone' => 'UTC', )), )), ), '2024-03-24' => array ( 'timestamp' => 1711238400, 'site' => Piwik_Site::__set_state(array( 'id' => '1', )), 'period' => Piwik_Period_Day::__set_state(array( 'label' => 'day', 'subperiods' => array ( ), 'subperiodsProcessed' => true, 'date' => Piwik_Date::__set_state(array( 'timestamp' => 1711298882, 'timezone' => 'UTC', )), )), ), '2024-03-25' => array ( 'timestamp' => 1711324800, 'site' => Piwik_Site::__set_state(array( 'id' => '1', )), 'period' => Piwik_Period_Day::__set_state(array( 'label' => 'day', 'subperiods' => array ( ), 'subperiodsProcessed' => true, 'date' => Piwik_Date::__set_state(array( 'timestamp' => 1711385282, 'timezone' => 'UTC', )), )), ), '2024-03-26' => array ( 'timestamp' => 1711411200, 'site' => Piwik_Site::__set_state(array( 'id' => '1', )), 'period' => Piwik_Period_Day::__set_state(array( 'label' => 'day', 'subperiods' => array ( ), 'subperiodsProcessed' => true, 'date' => Piwik_Date::__set_state(array( 'timestamp' => 1711471682, 'timezone' => 'UTC', )), )), ), '2024-03-27' => array ( 'timestamp' => 1711497600, 'site' => Piwik_Site::__set_state(array( 'id' => '1', )), 'period' => Piwik_Period_Day::__set_state(array( 'label' => 'day', 'subperiods' => array ( ), 'subperiodsProcessed' => true, 'date' => Piwik_Date::__set_state(array( 'timestamp' => 1711558082, 'timezone' => 'UTC', )), )), ), '2024-03-28' => array ( 'timestamp' => 1711584000, 'site' => Piwik_Site::__set_state(array( 'id' => '1', )), 'period' => Piwik_Period_Day::__set_state(array( 'label' => 'day', 'subperiods' => array ( ), 'subperiodsProcessed' => true, 'date' => Piwik_Date::__set_state(array( 'timestamp' => 1711644482, 'timezone' => 'UTC', )), )), ), '2024-03-29' => array ( 'timestamp' => 1711670400, 'site' => Piwik_Site::__set_state(array( 'id' => '1', )), 'period' => Piwik_Period_Day::__set_state(array( 'label' => 'day', 'subperiods' => array ( ), 'subperiodsProcessed' => true, 'date' => Piwik_Date::__set_state(array( 'timestamp' => 1711730882, 'timezone' => 'UTC', )), )), ), ), 'array' => array ( 'Wednesday 20 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 11, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Thursday 21 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 13, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Friday 22 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 15, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Saturday 23 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 17, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Sunday 24 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 19, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Monday 25 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 21, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Tuesday 26 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 23, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Wednesday 27 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 25, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Thursday 28 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 27, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Friday 29 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 29, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), ), 'keyName' => 'prettyDate', )), 'reportMetadata' => Piwik_DataTable_Array::__set_state(array( 'metadata' => array ( ), 'array' => array ( 'Wednesday 20 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 10, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Thursday 21 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 12, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Friday 22 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 14, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Saturday 23 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 16, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Sunday 24 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 18, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Monday 25 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 20, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Tuesday 26 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 22, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Wednesday 27 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 24, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Thursday 28 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 26, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), 'Friday 29 March 2024' => Piwik_DataTable::__set_state(array( 'rows' => array ( ), 'parents' => NULL, 'currentId' => 28, 'depthLevel' => 0, 'indexNotUpToDate' => true, 'rebuildIndexContinuously' => false, 'tableSortedBy' => false, 'queuedFilters' => array ( ), 'rowsCountBeforeLimitFilter' => 0, 'enableRecursiveSort' => false, 'enableRecursiveFilters' => false, 'summaryRow' => NULL, )), ), 'keyName' => 'prettyDate', )), 'timerMillis' => '37', );