Error: Data structure returned is not convertible in the requested format: Multidimensional column values not supported. Found unexpected array value for column '0' in row '0': 'array ( 0 => '2024-05-26', 1 => array ( 'count' => 0, 'starred' => 0, ), )'. Try to call this method with the parameters '&format=original&serialize=1'; you will get the original php data structure serialized.