Display report in dashboard code in develop doc not works & page showed element as text

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1

Hi,
this is the related develop doc link.

  1. when I tried to make report a widget showed in dashboard, this WidgetsList::add method seemed not exist? Is it out of date or something?

image
image1458×527 62 KB

  1. and I don’t know why my page is like this, it seemed not a part of html element but only text, is it right?
    image
    image1659×993 219 KB

    my controller code is same as the code in this page, and my API code is as follows

public function myReport($idSite, $period, $date, $segment = false)
{
$table = DataTable::makeFromSimpleArray(array(
array(‘label’ => ‘My Label 1’, ‘nb_visits’ => ‘1’),
array(‘label’ => ‘My Label 2’, ‘nb_visits’ => ‘5’),
));
return $table;
}