Error:  Data structure returned is not convertible in the requested format. Try to call this method with the parameters '&amp;format=original&amp;serialize=1'; you will get the original php data structure serialized. The data structure looks like this: 
 $data = array (
  'numSites' =&gt; 5,
  'totals' =&gt; 
  array (
    'nb_pageviews' =&gt; '31,336',
    'nb_visits' =&gt; '14,329',
    'nb_actions' =&gt; '60,239',
    'revenue' =&gt; '0',
    'nb_visits_lastdate' =&gt; 14134.0,
  ),
  'lastDate' =&gt; '2024-05-01',
  'sites' =&gt; 
  array (
    0 =&gt; 
    array (
      'label' =&gt; 'Kanton Zug',
      'nb_visits' =&gt; '14,264',
      'nb_actions' =&gt; '60,085',
      'nb_pageviews' =&gt; '31,216',
      'revenue' =&gt; 'CHF0',
      'nb_conversions' =&gt; 0,
      'visits_evolution' =&gt; '1.5%',
      'visits_evolution_trend' =&gt; 1,
      'actions_evolution' =&gt; '4.5%',
      'actions_evolution_trend' =&gt; 1,
      'pageviews_evolution' =&gt; '5.1%',
      'pageviews_evolution_trend' =&gt; 1,
      'revenue_evolution' =&gt; '0%',
      'revenue_evolution_trend' =&gt; 0,
      'nb_conversions_evolution' =&gt; '0%',
      'nb_conversions_evolution_trend' =&gt; 0,
      'idsite' =&gt; 1,
      'ratio' =&gt; 1,
      'currencySymbol' =&gt; 'CHF',
      'previous_nb_visits' =&gt; 14056,
      'periodName' =&gt; 'day',
      'previousRange' =&gt; 'Wed, May 1',
      'previous_nb_actions' =&gt; 57496,
      'previous_Actions_nb_pageviews' =&gt; 29705,
      'previous_Goal_revenue' =&gt; 0,
      'previous_Goal_nb_conversions' =&gt; 0,
      'group' =&gt; '',
      'main_url' =&gt; 'https://www.zg.ch',
    ),
    1 =&gt; 
    array (
      'label' =&gt; 'Microsite Kontaktstelle Wirtschaft',
      'nb_visits' =&gt; '41',
      'nb_actions' =&gt; '111',
      'nb_pageviews' =&gt; '77',
      'revenue' =&gt; 'CHF0',
      'nb_conversions' =&gt; 2,
      'visits_evolution' =&gt; '-30.5%',
      'visits_evolution_trend' =&gt; -1,
      'actions_evolution' =&gt; '-25%',
      'actions_evolution_trend' =&gt; -1,
      'pageviews_evolution' =&gt; '-35.3%',
      'pageviews_evolution_trend' =&gt; -1,
      'revenue_evolution' =&gt; '0%',
      'revenue_evolution_trend' =&gt; 0,
      'nb_conversions_evolution' =&gt; '100%',
      'nb_conversions_evolution_trend' =&gt; 1,
      'idsite' =&gt; 33,
      'ratio' =&gt; 1,
      'currencySymbol' =&gt; 'CHF',
      'previous_nb_visits' =&gt; 59,
      'periodName' =&gt; 'day',
      'previousRange' =&gt; 'Wed, May 1',
      'previous_nb_actions' =&gt; 148,
      'previous_Actions_nb_pageviews' =&gt; 119,
      'previous_Goal_revenue' =&gt; 0,
      'previous_Goal_nb_conversions' =&gt; 1,
      'group' =&gt; '',
      'main_url' =&gt; 'https://economy.zg.ch',
    ),
    2 =&gt; 
    array (
      'label' =&gt; 'Obergericht',
      'nb_visits' =&gt; '21',
      'nb_actions' =&gt; '26',
      'nb_pageviews' =&gt; '26',
      'revenue' =&gt; 'CHF0',
      'nb_conversions' =&gt; 0,
      'visits_evolution' =&gt; '31.3%',
      'visits_evolution_trend' =&gt; 1,
      'actions_evolution' =&gt; '8.3%',
      'actions_evolution_trend' =&gt; 1,
      'pageviews_evolution' =&gt; '8.3%',
      'pageviews_evolution_trend' =&gt; 1,
      'revenue_evolution' =&gt; '0%',
      'revenue_evolution_trend' =&gt; 0,
      'nb_conversions_evolution' =&gt; '0%',
      'nb_conversions_evolution_trend' =&gt; 0,
      'idsite' =&gt; 22,
      'ratio' =&gt; 1,
      'currencySymbol' =&gt; 'CHF',
      'previous_nb_visits' =&gt; 16,
      'periodName' =&gt; 'day',
      'previousRange' =&gt; 'Wed, May 1',
      'previous_nb_actions' =&gt; 24,
      'previous_Actions_nb_pageviews' =&gt; 24,
      'previous_Goal_revenue' =&gt; 0,
      'previous_Goal_nb_conversions' =&gt; 0,
      'group' =&gt; '',
      'main_url' =&gt; 'http://obergericht.zg.ch',
    ),
    3 =&gt; 
    array (
      'label' =&gt; 'Veranstaltungskalender',
      'nb_visits' =&gt; '3',
      'nb_actions' =&gt; '17',
      'nb_pageviews' =&gt; '17',
      'revenue' =&gt; 'CHF0',
      'nb_conversions' =&gt; 0,
      'visits_evolution' =&gt; '50%',
      'visits_evolution_trend' =&gt; 1,
      'actions_evolution' =&gt; '466.7%',
      'actions_evolution_trend' =&gt; 1,
      'pageviews_evolution' =&gt; '466.7%',
      'pageviews_evolution_trend' =&gt; 1,
      'revenue_evolution' =&gt; '0%',
      'revenue_evolution_trend' =&gt; 0,
      'nb_conversions_evolution' =&gt; '0%',
      'nb_conversions_evolution_trend' =&gt; 0,
      'idsite' =&gt; 3,
      'ratio' =&gt; 1,
      'currencySymbol' =&gt; 'CHF',
      'previous_nb_visits' =&gt; 2,
      'periodName' =&gt; 'day',
      'previousRange' =&gt; 'Wed, May 1',
      'previous_nb_actions' =&gt; 3,
      'previous_Actions_nb_pageviews' =&gt; 3,
      'previous_Goal_revenue' =&gt; 0,
      'previous_Goal_nb_conversions' =&gt; 0,
      'group' =&gt; '',
      'main_url' =&gt; 'http://veranstaltungen.zug.ch/veranstaltungen',
    ),
    4 =&gt; 
    array (
      'label' =&gt; 'Wahlen &amp; Abstimmungen',
      'nb_visits' =&gt; '0',
      'nb_actions' =&gt; '0',
      'nb_pageviews' =&gt; '0',
      'revenue' =&gt; 'CHF0',
      'nb_conversions' =&gt; 0,
      'visits_evolution' =&gt; '-100%',
      'visits_evolution_trend' =&gt; -1,
      'actions_evolution' =&gt; '-100%',
      'actions_evolution_trend' =&gt; -1,
      'pageviews_evolution' =&gt; '-100%',
      'pageviews_evolution_trend' =&gt; -1,
      'revenue_evolution' =&gt; '0%',
      'revenue_evolution_trend' =&gt; 0,
      'nb_conversions_evolution' =&gt; '0%',
      'nb_conversions_evolution_trend' =&gt; 0,
      'idsite' =&gt; 14,
      'ratio' =&gt; 1,
      'currencySymbol' =&gt; 'CHF',
      'previous_nb_visits' =&gt; 1,
      'periodName' =&gt; 'day',
      'previousRange' =&gt; 'Wed, May 1',
      'previous_nb_actions' =&gt; 1,
      'previous_Actions_nb_pageviews' =&gt; 1,
      'previous_Goal_revenue' =&gt; 0,
      'previous_Goal_nb_conversions' =&gt; 0,
      'group' =&gt; '',
      'main_url' =&gt; 'https://wab.zug.ch',
    ),
  ),
);