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 ( 0 => array ( 'uniqueId' => 'General_Actions', 'name' => 'Behaviour', 'subcategories' => array ( 0 => array ( 'uniqueId' => 'customdimension2', 'name' => 'Page Author', ), 1 => array ( 'uniqueId' => 'customdimension4', 'name' => 'Page Location', ), 2 => array ( 'uniqueId' => 'customdimension5', 'name' => 'Page Type', ), 3 => array ( 'uniqueId' => 'VisitorInterest_Engagement', 'name' => 'Engagement', ), 4 => array ( 'uniqueId' => 'Transitions_Transitions', 'name' => 'Transitions', ), 5 => array ( 'uniqueId' => 'General_Downloads', 'name' => 'Downloads', ), 6 => array ( 'uniqueId' => 'Actions_SubmenuPagesEntry', 'name' => 'Entry pages', ), 7 => array ( 'uniqueId' => 'Actions_SubmenuPagesExit', 'name' => 'Exit pages', ), 8 => array ( 'uniqueId' => 'General_Outlinks', 'name' => 'Outlinks', ), 9 => array ( 'uniqueId' => 'Actions_SubmenuPageTitles', 'name' => 'Page titles', ), 10 => array ( 'uniqueId' => 'General_Pages', 'name' => 'Pages', ), 11 => array ( 'uniqueId' => 'Actions_SubmenuSitesearch', 'name' => 'Site Search', ), 12 => array ( 'uniqueId' => 'Events_Events', 'name' => 'Events', ), 13 => array ( 'uniqueId' => 'Contents_Contents', 'name' => 'Contents', ), 14 => array ( 'uniqueId' => 'UsersFlow_TopPaths', 'name' => 'Top Paths', ), 15 => array ( 'uniqueId' => 'UsersFlow_UsersFlow', 'name' => 'Users Flow', ), 16 => array ( 'uniqueId' => 'SearchEngineKeywordsPerformance_CrawlingErrors', 'name' => 'Crawling errors', ), ), ), 1 => array ( 'uniqueId' => 'General_Visitors', 'name' => 'Visitors', 'subcategories' => array ( 0 => array ( 'uniqueId' => 'customdimension1', 'name' => 'User Type', ), 1 => array ( 'uniqueId' => 'DevicesDetection_Devices', 'name' => 'Devices', ), 2 => array ( 'uniqueId' => 'DevicesDetection_Software', 'name' => 'Software', ), 3 => array ( 'uniqueId' => 'General_Overview', 'name' => 'Overview', ), 4 => array ( 'uniqueId' => 'UserCountry_SubmenuLocations', 'name' => 'Locations', ), 5 => array ( 'uniqueId' => 'VisitTime_SubmenuTimes', 'name' => 'Times', ), 6 => array ( 'uniqueId' => 'UserCountryMap_RealTimeMap', 'name' => 'Real-time Map', ), 7 => array ( 'uniqueId' => 'General_RealTime', 'name' => 'Real-time', ), 8 => array ( 'uniqueId' => 'Live_VisitorLog', 'name' => 'Visits Log', ), 9 => array ( 'uniqueId' => 'CustomVariables_CustomVariables', 'name' => 'Custom Variables', ), 10 => array ( 'uniqueId' => 'UserId_UserReportTitle', 'name' => 'User IDs', ), ), ), 2 => array ( 'uniqueId' => 'Referrers_Referrers', 'name' => 'Acquisition', 'subcategories' => array ( 0 => array ( 'uniqueId' => 'Referrers_WidgetGetAll', 'name' => 'All Channels', ), 1 => array ( 'uniqueId' => 'Referrers_URLCampaignBuilder', 'name' => 'Campaign URL Builder', ), 2 => array ( 'uniqueId' => 'Referrers_Campaigns', 'name' => 'Campaigns', ), 3 => array ( 'uniqueId' => 'General_Overview', 'name' => 'Overview', ), 4 => array ( 'uniqueId' => 'Referrers_SubmenuSearchEngines', 'name' => 'Search Engines & Keywords', ), 5 => array ( 'uniqueId' => 'Referrers_Socials', 'name' => 'Social Networks', ), 6 => array ( 'uniqueId' => 'Referrers_SubmenuWebsitesOnly', 'name' => 'Websites', ), 7 => array ( 'uniqueId' => 'SearchEngineKeywordsPerformance_CrawlingStats', 'name' => 'Crawling overview', ), ), ), 3 => array ( 'uniqueId' => 'Goals_Goals', 'name' => 'Goals', 'subcategories' => array ( 0 => array ( 'uniqueId' => '4', 'name' => 'New Job Application', ), 1 => array ( 'uniqueId' => '5', 'name' => 'View Submit Job', ), 2 => array ( 'uniqueId' => '6', 'name' => 'New Resume', ), 3 => array ( 'uniqueId' => '7', 'name' => 'Liveaboard.com click', ), 4 => array ( 'uniqueId' => '8', 'name' => 'Agoda click', ), 5 => array ( 'uniqueId' => '9', 'name' => 'User Comments', ), 6 => array ( 'uniqueId' => '10', 'name' => 'Newsletter Signup', ), 7 => array ( 'uniqueId' => 'General_Overview', 'name' => 'Overview', ), 8 => array ( 'uniqueId' => 'MultiChannelConversionAttribution_MultiAttribution', 'name' => 'Multi Attribution', ), ), ), 4 => array ( 'uniqueId' => 'Goals_Ecommerce', 'name' => 'Ecommerce', 'subcategories' => array ( 0 => array ( 'uniqueId' => 'Goals_EcommerceLog', 'name' => 'Ecommerce Log', ), 1 => array ( 'uniqueId' => 'General_Overview', 'name' => 'Overview', ), 2 => array ( 'uniqueId' => 'Goals_Products', 'name' => 'Products', ), 3 => array ( 'uniqueId' => 'Ecommerce_Sales', 'name' => 'Sales', ), 4 => array ( 'uniqueId' => 'MultiChannelConversionAttribution_MultiAttribution', 'name' => 'Multi Attribution', ), ), ), 5 => array ( 'uniqueId' => 'AbTesting_Experiments', 'name' => 'A/B Tests', 'subcategories' => array ( 0 => array ( 'uniqueId' => '9', 'name' => 'AffiliateLinkEffectiveness', ), 1 => array ( 'uniqueId' => '10', 'name' => 'IDivedThereLinkMove', ), 2 => array ( 'uniqueId' => '11', 'name' => 'JobsListingCallToActionChange', ), 3 => array ( 'uniqueId' => '12', 'name' => 'JobPageRelevantCallToAction', ), 4 => array ( 'uniqueId' => '13', 'name' => 'DivingPageTitles', ), 5 => array ( 'uniqueId' => 'General_Overview', 'name' => 'Overview', ), ), ), 6 => array ( 'uniqueId' => 'CustomReports_CustomReports', 'name' => 'Custom Reports', 'subcategories' => array ( 0 => array ( 'uniqueId' => '2', 'name' => 'Bali pages, breakdown new/returning', ), 1 => array ( 'uniqueId' => '5', 'name' => 'Country by New/returning with a filter', ), 2 => array ( 'uniqueId' => '8', 'name' => 'Evolution KPIs', ), 3 => array ( 'uniqueId' => '1', 'name' => 'Pages by New/Returning visitor', ), ), ), 7 => array ( 'uniqueId' => 'FormAnalytics_Forms', 'name' => 'Forms', 'subcategories' => array ( 0 => array ( 'uniqueId' => '2', 'name' => 'Comment Form', ), 1 => array ( 'uniqueId' => '7', 'name' => 'Apply to Job Form', ), 2 => array ( 'uniqueId' => '29', 'name' => 'Add Job Form', ), 3 => array ( 'uniqueId' => '30', 'name' => 'Candidate Registration Form', ), 4 => array ( 'uniqueId' => '31', 'name' => 'Resume Search', ), 5 => array ( 'uniqueId' => '32', 'name' => 'Build Resume Form', ), 6 => array ( 'uniqueId' => '40', 'name' => 'Contact Us Form', ), 7 => array ( 'uniqueId' => '41', 'name' => 'Newsletter Signup Form', ), 8 => array ( 'uniqueId' => '42', 'name' => 'Checkout Form', ), 9 => array ( 'uniqueId' => 'General_Overview', 'name' => 'Overview', ), 10 => array ( 'uniqueId' => 'FormAnalytics_TypeRealTime', 'name' => 'Real-time', ), ), ), 8 => array ( 'uniqueId' => 'Funnels_Funnels', 'name' => 'Funnels', 'subcategories' => array ( 0 => array ( 'uniqueId' => 'General_Overview', 'name' => 'Overview', ), 1 => array ( 'uniqueId' => '2', 'name' => 'New Resume', ), 2 => array ( 'uniqueId' => '3', 'name' => 'View Submit Job', ), 3 => array ( 'uniqueId' => '7', 'name' => 'New Job Application', ), 4 => array ( 'uniqueId' => '8', 'name' => 'Liveaboard.com click', ), 5 => array ( 'uniqueId' => '99', 'name' => 'Sales', ), ), ), 9 => array ( 'uniqueId' => 'HeatmapSessionRecording_Heatmaps', 'name' => 'Heatmaps', 'subcategories' => array ( 0 => array ( 'uniqueId' => '11', 'name' => 'Homepage', ), ), ), 10 => array ( 'uniqueId' => 'HeatmapSessionRecording_SessionRecordings', 'name' => 'Session Recordings', 'subcategories' => array ( 0 => array ( 'uniqueId' => '13', 'name' => 'Homepage', ), ), ), 11 => array ( 'uniqueId' => 'MediaAnalytics_Media', 'name' => 'Media', 'subcategories' => array ( 0 => array ( 'uniqueId' => 'MediaAnalytics_TypeAudienceLog', 'name' => 'Audience Log', ), 1 => array ( 'uniqueId' => 'MediaAnalytics_TypeAudienceMap', 'name' => 'Audience Map', ), 2 => array ( 'uniqueId' => 'MediaAnalytics_TypeAudio', 'name' => 'Audio', ), 3 => array ( 'uniqueId' => 'General_Overview', 'name' => 'Overview', ), 4 => array ( 'uniqueId' => 'MediaAnalytics_MediaPlayers', 'name' => 'Media Players', ), 5 => array ( 'uniqueId' => 'MediaAnalytics_TypeRealTime', 'name' => 'Real-time', ), 6 => array ( 'uniqueId' => 'MediaAnalytics_TypeVideo', 'name' => 'Video', ), ), ), );