Laravel Charts with erik.cat

I want to generate a random chart with Erik Charts but is not displaying anything!

$data = DB::table('disease')->get();

        $chart = Charts::create('bar', 'highcharts')
             ->title('My nice chart')
             ->elementLabel('My nice label')
             ->labels($data->pluck('disease_id'))
             ->values($data->pluck('disease_name'))

             ->responsive(true);

via Chebli Mohamed