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 (
  0 =&gt; 
  array (
    'idfunnel' =&gt; '2',
    'idsite' =&gt; '1',
    'idgoal' =&gt; '6',
    'created_date' =&gt; '2016-11-17 01:10:20',
    'activated' =&gt; true,
    'steps' =&gt; 
    array (
      0 =&gt; 
      array (
        'position' =&gt; 1,
        'name' =&gt; 'Job board',
        'pattern_type' =&gt; 'path_contains',
        'pattern' =&gt; '/jobs/',
        'required' =&gt; true,
      ),
    ),
    'name' =&gt; 'New Resume',
    'final_step_position' =&gt; 2,
  ),
  1 =&gt; 
  array (
    'idfunnel' =&gt; '3',
    'idsite' =&gt; '1',
    'idgoal' =&gt; '5',
    'created_date' =&gt; '2016-11-17 01:12:46',
    'activated' =&gt; true,
    'steps' =&gt; 
    array (
      0 =&gt; 
      array (
        'position' =&gt; 1,
        'name' =&gt; 'Job board',
        'pattern_type' =&gt; 'path_equals',
        'pattern' =&gt; '/jobs',
        'required' =&gt; false,
      ),
    ),
    'name' =&gt; 'View Submit Job',
    'final_step_position' =&gt; 2,
  ),
  2 =&gt; 
  array (
    'idfunnel' =&gt; '7',
    'idsite' =&gt; '1',
    'idgoal' =&gt; '4',
    'created_date' =&gt; '2016-11-18 00:40:28',
    'activated' =&gt; true,
    'steps' =&gt; 
    array (
      0 =&gt; 
      array (
        'position' =&gt; 1,
        'name' =&gt; 'Job board',
        'pattern_type' =&gt; 'path_equals',
        'pattern' =&gt; '/jobs',
        'required' =&gt; true,
      ),
      1 =&gt; 
      array (
        'position' =&gt; 2,
        'name' =&gt; 'Job view',
        'pattern_type' =&gt; 'path_startswith',
        'pattern' =&gt; '/jobs/view/',
        'required' =&gt; true,
      ),
    ),
    'name' =&gt; 'New Job Application',
    'final_step_position' =&gt; 3,
  ),
  3 =&gt; 
  array (
    'idfunnel' =&gt; '8',
    'idsite' =&gt; '1',
    'idgoal' =&gt; '7',
    'created_date' =&gt; '2016-12-02 02:52:40',
    'activated' =&gt; true,
    'steps' =&gt; 
    array (
      0 =&gt; 
      array (
        'position' =&gt; 1,
        'name' =&gt; 'Any divezone page',
        'pattern_type' =&gt; 'url_contains',
        'pattern' =&gt; 'divezone.net',
        'required' =&gt; false,
      ),
      1 =&gt; 
      array (
        'position' =&gt; 2,
        'name' =&gt; 'Diving page',
        'pattern_type' =&gt; 'url_contains',
        'pattern' =&gt; '/diving',
        'required' =&gt; false,
      ),
    ),
    'name' =&gt; 'Liveaboard.com click',
    'final_step_position' =&gt; 3,
  ),
  4 =&gt; 
  array (
    'idfunnel' =&gt; '99',
    'idsite' =&gt; '1',
    'idgoal' =&gt; '0',
    'created_date' =&gt; '2018-05-09 00:33:10',
    'activated' =&gt; true,
    'steps' =&gt; 
    array (
      0 =&gt; 
      array (
        'position' =&gt; 1,
        'name' =&gt; 'Homepage',
        'pattern_type' =&gt; 'path_equals',
        'pattern' =&gt; '/',
        'required' =&gt; false,
      ),
      1 =&gt; 
      array (
        'position' =&gt; 2,
        'name' =&gt; '50% off scuba diving masks promotion',
        'pattern_type' =&gt; 'path_equals',
        'pattern' =&gt; '/promotion/50-off-scuba-diving-masks',
        'required' =&gt; true,
      ),
      2 =&gt; 
      array (
        'position' =&gt; 3,
        'name' =&gt; 'Item added to cart',
        'pattern_type' =&gt; 'eventname_equals',
        'pattern' =&gt; 'added - diving mask',
        'required' =&gt; true,
      ),
      3 =&gt; 
      array (
        'position' =&gt; 4,
        'name' =&gt; 'View cart',
        'pattern_type' =&gt; 'path_equals',
        'pattern' =&gt; '/cart',
        'required' =&gt; false,
      ),
      4 =&gt; 
      array (
        'position' =&gt; 5,
        'name' =&gt; 'Order page',
        'pattern_type' =&gt; 'path_equals',
        'pattern' =&gt; '/checkout',
        'required' =&gt; true,
      ),
      5 =&gt; 
      array (
        'position' =&gt; 6,
        'name' =&gt; 'Thank you page',
        'pattern_type' =&gt; 'path_startswith',
        'pattern' =&gt; '/checkout/order-received',
        'required' =&gt; true,
      ),
    ),
    'name' =&gt; 'Sales',
    'final_step_position' =&gt; 7,
  ),
);