Error: Data structure returned is not convertible in the requested format: Only integer keys supported for array columns on base level. Unsupported string 'totals' found for row 'array (
  'nb_pageviews' =&gt; '25,473',
  'nb_visits' =&gt; '10,452',
  'hits' =&gt; '30,917',
  'nb_actions' =&gt; '30,274',
  'revenue' =&gt; '73,404.10',
  'previous_nb_pageviews' =&gt; '27,502',
  'previous_nb_visits' =&gt; '10,877',
  'previous_hits' =&gt; '32,955',
  'previous_nb_actions' =&gt; '32,353',
  'previous_revenue' =&gt; '91,080.05',
  'ai_chatbots_requests' =&gt; '0',
  'previous_ai_chatbots_requests' =&gt; '0',
)'. Try to call this method with the parameters '&amp;format=original&amp;serialize=1'; you will get the original php data structure serialized.