Notice: Undefined property: view::$row_index in function views_handler_field->get_render_tokens() (line 1423 in file \sites\all\modules\views\handlers\views_handler_field.inc).

Views - 7.x-3.5

Notice appears, when for header field was enabled rewriting mode. To fix this issue i used code below:
@file - views_dataviz_plugin_style_dataviz.inc

  function render() {
    ...
      foreach ($records as $row_index => $row) {
        foreach ($this->view->field as $key => $field) {
          if (!$field->options['exclude']) {
            //CUSTOM ADDITION's BELOW
            //$field_value = $field->advanced_render($row);
            //Fields are already rendered, so we can just use rendered values
            $field_value = $this->rendered_fields[$row_index][$field->field];
            ...