I don't see the graphs in the detail of the resource

i installed this package in laravel nova: https://github.com/kirschbaum-development/nova-chartjs

unfortunately I am unable to view the detailed graphs of the resource:

i did as follows in the model:

I would like to show the graphs in detail of the resource, I have configured the model as per guide and inserted a static test graph.

Unfortunately, nothing has changed in the detail of the resource:

below the code in the model:

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory; use Illuminate\Database\Eloquent\Model; use KirschbaumDevelopment\NovaChartjs\Traits\HasChart; use KirschbaumDevelopment\NovaChartjs\Contracts\Chartable;

class TrelloCustomer extends Model implements Chartable
{
    use HasFactory;
    use HasChart;

    protected $fillable = ["name","todo","done"];


    public static function getNovaChartjsSettings(): array
    {
        return [
            'default' => [

                'height' => 400,
                'indexColor' => '#999999',
                'color' => '#FF0000',
                'parameters' => ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
                'options' => ['responsive' => true, 'maintainAspectRatio' => false],
            ]
        ];