Export Action didn't Export A Defined Column

class TemporaryPassword extends Model
{
    use HasFactory;

    protected $fillable = ['nis', 'plaintext_password'];
}

<?php

namespace App\Filament\Exports;

use App\Models\TemporaryPassword;
use Filament\Actions\Exports\ExportColumn;
use Filament\Actions\Exports\Exporter;
use Filament\Actions\Exports\Models\Export;
use OpenSpout\Common\Entity\Style\CellAlignment;
use OpenSpout\Common\Entity\Style\CellVerticalAlignment;
use OpenSpout\Common\Entity\Style\Color;
use OpenSpout\Common\Entity\Style\Style;

class TemporaryPasswordExporter extends Exporter
{
    protected static ?string $model = TemporaryPassword::class;

    public static function getColumns(): array
    {
        return [
            ExportColumn::make('id')
                ->label('ID'),
            ExportColumn::make('nis')
                ->label('NIS'),
            ExportColumn::make('plaintext_password')
                ->formatStateUsing(fn($record) => $record->plaintext),
        ];
    }

    public static function getCompletedNotificationBody(Export $export): string
    {
        $body = 'Your temporary password export has completed and ' . number_format($export->successful_rows) . ' ' . str('row')->plural($export->successful_rows) . ' exported.';

        if ($failedRowsCount = $export->getFailedRowsCount()) {
            $body .= ' ' . number_format($failedRowsCount) . ' ' . str('row')->plural($failedRowsCount) . ' failed to export.';
        }

        return $body;
    }
}