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 (
  'numSites' => 24,
  'totals' => 
  array (
    'nb_pageviews' => false,
    'nb_visits' => '13,913',
    'nb_actions' => '0',
    'revenue' => false,
    'nb_visits_lastdate' => 4415.0,
  ),
  'lastDate' => '2022-09-25',
  'sites' => 
  array (
    0 => 
    array (
      'label' => 'www.sistema.puglia.it',
      'nb_visits' => '4,823',
      'nb_actions' => '0',
      'visits_evolution' => '343%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 14,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 1318,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://www.sistema.puglia.it',
    ),
    1 => 
    array (
      'label' => 'www.empulia.it',
      'nb_visits' => '2,066',
      'nb_actions' => '0',
      'visits_evolution' => '1,578.7%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 8,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 149,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://www.empulia.it',
    ),
    2 => 
    array (
      'label' => 'pagopa.rupar.puglia.it',
      'nb_visits' => '1,870',
      'nb_actions' => '0',
      'visits_evolution' => '295.8%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 1,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 572,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'https://pagopa.rupar.puglia.it',
    ),
    3 => 
    array (
      'label' => 'www.regione.puglia.it',
      'nb_visits' => '1,805',
      'nb_actions' => '0',
      'visits_evolution' => '286.8%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 2,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 565,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://www.regione.puglia.it',
    ),
    4 => 
    array (
      'label' => 'www.dms.puglia.it',
      'nb_visits' => '1,233',
      'nb_actions' => '0',
      'visits_evolution' => '66.5%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 37,
      'ratio' => 0.792,
      'currencySymbol' => '€',
      'previous_nb_visits' => 935,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'https://www.dms.puglia.it',
    ),
    5 => 
    array (
      'label' => 'uma.regione.puglia.it',
      'nb_visits' => '583',
      'nb_actions' => '0',
      'visits_evolution' => '1,183.3%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 30,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 55,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'https://uma.regione.puglia.it',
    ),
    6 => 
    array (
      'label' => 'cartapulia.it',
      'nb_visits' => '255',
      'nb_actions' => '0',
      'visits_evolution' => '38.4%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 41,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 223,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://cartapulia.it',
    ),
    7 => 
    array (
      'label' => 'mirweb.regione.puglia.it',
      'nb_visits' => '249',
      'nb_actions' => '0',
      'visits_evolution' => '939.5%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 31,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 29,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'https://mirweb.regione.puglia.it',
    ),
    8 => 
    array (
      'label' => 'pma.regione.puglia.it',
      'nb_visits' => '239',
      'nb_actions' => '0',
      'visits_evolution' => '1,507.5%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 33,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 18,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'https://pma.regione.puglia.it',
    ),
    9 => 
    array (
      'label' => 'www.pugliasportiva.it',
      'nb_visits' => '215',
      'nb_actions' => '0',
      'visits_evolution' => '-0.7%',
      'visits_evolution_trend' => -1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 28,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 262,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://pugliasportiva.it',
    ),
    10 => 
    array (
      'label' => 'trasparenza.regione.puglia.it',
      'nb_visits' => '193',
      'nb_actions' => '0',
      'visits_evolution' => '443.4%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 9,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 43,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://trasparenza.regione.puglia.it',
    ),
    11 => 
    array (
      'label' => 'mir.regione.puglia.it',
      'nb_visits' => '108',
      'nb_actions' => '0',
      'visits_evolution' => '1,207.5%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 32,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 10,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'https://mir.regione.puglia.it',
    ),
    12 => 
    array (
      'label' => 'internazionalizzazione.regione.puglia.it',
      'nb_visits' => '93',
      'nb_actions' => '0',
      'visits_evolution' => '-13.4%',
      'visits_evolution_trend' => -1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 29,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 130,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://internazionalizzazione.regione.puglia.it',
    ),
    13 => 
    array (
      'label' => 'www.pugliadigitallibrary.it',
      'nb_visits' => '88',
      'nb_actions' => '0',
      'visits_evolution' => '61.4%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 6,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 66,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://www.pugliadigitallibrary.it',
    ),
    14 => 
    array (
      'label' => 'custodiamoturismocultura.regione.puglia.it',
      'nb_visits' => '40',
      'nb_actions' => '0',
      'visits_evolution' => '591.8%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 40,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 7,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://custodiamoturismocultura.regione.puglia.it',
    ),
    15 => 
    array (
      'label' => 'svilupporurale.regione.puglia.it',
      'nb_visits' => '29',
      'nb_actions' => '0',
      'visits_evolution' => '150.8%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 34,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 14,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://svilupporurale.regione.puglia.it',
    ),
    16 => 
    array (
      'label' => 'www.viaggiareinpuglia.it',
      'nb_visits' => '22',
      'nb_actions' => '0',
      'visits_evolution' => '56.7%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 5,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 17,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'https://www.viaggiareinpuglia.it',
    ),
    17 => 
    array (
      'label' => 'www.agenziapugliapromozione.it',
      'nb_visits' => '2',
      'nb_actions' => '0',
      'visits_evolution' => '142.1%',
      'visits_evolution_trend' => 1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 27,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 1,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'https://www.agenziapugliapromozione.it',
    ),
    18 => 
    array (
      'label' => 'fesr.regione.puglia.it',
      'nb_visits' => '0',
      'nb_actions' => '0',
      'visits_evolution' => '-100%',
      'visits_evolution_trend' => -1,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 36,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 1,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://fesr.regione.puglia.it',
    ),
    19 => 
    array (
      'label' => 'fse.regione.puglia.it',
      'nb_visits' => '0',
      'nb_actions' => '0',
      'visits_evolution' => '0%',
      'visits_evolution_trend' => 0,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 35,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 0,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://fse.regione.puglia.it',
    ),
    20 => 
    array (
      'label' => 'www.culturainpuglia.it',
      'nb_visits' => '0',
      'nb_actions' => '0',
      'visits_evolution' => '0%',
      'visits_evolution_trend' => 0,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 42,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 0,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://www.culturainpuglia.it',
    ),
    21 => 
    array (
      'label' => 'www.ecologia.regione.puglia.it',
      'nb_visits' => '0',
      'nb_actions' => '0',
      'visits_evolution' => '0%',
      'visits_evolution_trend' => 0,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 26,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 0,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://www.ecologia.regione.puglia.it',
    ),
    22 => 
    array (
      'label' => 'www.emergenzaxylella.it',
      'nb_visits' => '0',
      'nb_actions' => '0',
      'visits_evolution' => '0%',
      'visits_evolution_trend' => 0,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 18,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 0,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://www.emergenzaxylella.it',
    ),
    23 => 
    array (
      'label' => 'www.sit.puglia.it',
      'nb_visits' => '0',
      'nb_actions' => '0',
      'visits_evolution' => '0%',
      'visits_evolution_trend' => 0,
      'actions_evolution' => '0%',
      'actions_evolution_trend' => 0,
      'idsite' => 3,
      'ratio' => 0.826,
      'currencySymbol' => '€',
      'previous_nb_visits' => 0,
      'periodName' => 'day',
      'previousRange' => 'Sun, Sep 25',
      'previous_nb_actions' => 0,
      'group' => '',
      'main_url' => 'http://www.sit.puglia.it',
    ),
  ),
);