Почему не отображаются все данные на графике HighCharts?

echo HighCharts::widget([
        'clientOptions' => [
            'chart' => [
                'height' => '700',
                'type' => 'column'
            ],
            'title' => [
                'text' => 'График платежей'
            ],
            'xAxis' => [
                'categories' => $columnTitles,
            ],
            'yAxis' => [
                'min' => 1,
                 'type' => "logarithmic",
                'title' => [
                    'text' => 'MDL'
                ]
            ],
            'series' => $chartData
            ,
            'plotOptions' => [
                'column' => [
                    'stacking' => 'normal',
                    'dataLabels' => [
                        'allowOverlap' => true,
                        'enabled' => true,
                        'color' => 'white'
                    ]
                ]
            ]
        ]
    ]);