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; 2,
  'totals' =&gt; 
  array (
    'nb_pageviews' =&gt; '2,600',
    'nb_visits' =&gt; '1,863',
    'nb_actions' =&gt; '3,147',
    'revenue' =&gt; '5,377.55',
    'nb_visits_lastdate' =&gt; 2071.0,
  ),
  'lastDate' =&gt; '2022-09-23',
  'sites' =&gt; 
  array (
    0 =&gt; 
    array (
      'label' =&gt; 'Demo Site',
      'nb_visits' =&gt; '1,863',
      'nb_actions' =&gt; '3,147',
      'nb_pageviews' =&gt; '2,600',
      'revenue' =&gt; '$5,377.55',
      'nb_conversions' =&gt; 121,
      'orders' =&gt; 46,
      'ecommerce_revenue' =&gt; 5309.55,
      'visits_evolution' =&gt; '-10%',
      'visits_evolution_trend' =&gt; -1,
      'actions_evolution' =&gt; '-11.2%',
      'actions_evolution_trend' =&gt; -1,
      'pageviews_evolution' =&gt; '-11.4%',
      'pageviews_evolution_trend' =&gt; -1,
      'revenue_evolution' =&gt; '-40.5%',
      'revenue_evolution_trend' =&gt; -1,
      'nb_conversions_evolution' =&gt; '-12.9%',
      'nb_conversions_evolution_trend' =&gt; -1,
      'orders_evolution' =&gt; '-17.9%',
      'orders_evolution_trend' =&gt; -1,
      'ecommerce_revenue_evolution' =&gt; '-40.7%',
      'ecommerce_revenue_evolution_trend' =&gt; -1,
      'idsite' =&gt; 1,
      'ratio' =&gt; 1,
      'currencySymbol' =&gt; '$',
      'previous_nb_visits' =&gt; 2071,
      'periodName' =&gt; 'day',
      'previousRange' =&gt; 'Fri, Sep 23',
      'previous_nb_actions' =&gt; 3544,
      'previous_Actions_nb_pageviews' =&gt; 2935,
      'previous_Goal_revenue' =&gt; 9045.5,
      'previous_Goal_nb_conversions' =&gt; 139,
      'previous_Goal_0_nb_conversions' =&gt; 56,
      'previous_Goal_0_revenue' =&gt; 8954.5,
      'group' =&gt; '',
      'main_url' =&gt; 'https://divezone.net',
    ),
    1 =&gt; 
    array (
      'label' =&gt; 'Example Site',
      'nb_visits' =&gt; '0',
      'nb_actions' =&gt; '0',
      'nb_pageviews' =&gt; '0',
      'revenue' =&gt; '$0',
      'nb_conversions' =&gt; 0,
      'visits_evolution' =&gt; '0%',
      'visits_evolution_trend' =&gt; 0,
      'actions_evolution' =&gt; '0%',
      'actions_evolution_trend' =&gt; 0,
      'pageviews_evolution' =&gt; '0%',
      'pageviews_evolution_trend' =&gt; 0,
      'revenue_evolution' =&gt; '0%',
      'revenue_evolution_trend' =&gt; 0,
      'nb_conversions_evolution' =&gt; '0%',
      'nb_conversions_evolution_trend' =&gt; 0,
      'idsite' =&gt; 2,
      'ratio' =&gt; 1,
      'currencySymbol' =&gt; '$',
      'previous_nb_visits' =&gt; 0,
      'periodName' =&gt; 'day',
      'previousRange' =&gt; 'Fri, Sep 23',
      'previous_nb_actions' =&gt; 0,
      'previous_Actions_nb_pageviews' =&gt; 0,
      'previous_Goal_revenue' =&gt; 0,
      'previous_Goal_nb_conversions' =&gt; 0,
      'group' =&gt; '',
      'main_url' =&gt; 'https://matomo.org',
    ),
  ),
);