Error: Data structure returned is not convertible in the requested format: Multidimensional column values not supported. Found unexpected array value for column 'subcategories' in row '0': 'array (
  0 => 
  array (
    'uniqueId' => 'customdimension2',
    'name' => 'Page Author',
  ),
  1 => 
  array (
    'uniqueId' => 'customdimension4',
    'name' => 'Page Location',
  ),
  2 => 
  array (
    'uniqueId' => 'customdimension5',
    'name' => 'Page Type',
  ),
  3 => 
  array (
    'uniqueId' => 'VisitorInterest_Engagement',
    'name' => 'Engagement',
  ),
  4 => 
  array (
    'uniqueId' => 'Transitions_Transitions',
    'name' => 'Transitions',
  ),
  5 => 
  array (
    'uni'. Try to call this method with the parameters '&format=original&serialize=1'; you will get the original php data structure serialized.