Filament 3 export always fails

I am trying to export records in filament 3, but I always get a notification with

Your client export has completed and 0 rows exported. 1 row failed to export.

I did everything like in the filament docs stated.

My Export class looks like

<?php

namespace App\Filament\App\Exports;

use App\Models\Client;
use Filament\Actions\Exports\Exporter;
use Filament\Actions\Exports\ExportColumn;
use Filament\Actions\Exports\Models\Export;

class ClientExporter extends Exporter
{
    protected static ?string $model = Client::class;

    public static function getColumns(): array
    {
        return [
            ExportColumn::make('salutation'),
            ExportColumn::make('gender'),
            ExportColumn::make('firstname'),
            ExportColumn::make('lastname'),
            ExportColumn::make('email'),
            ExportColumn::make('phone'),
            ExportColumn::make('whatsapp_number'),
            ExportColumn::make('address'),
            ExportColumn::make('city'),
            ExportColumn::make('state'),
            ExportColumn::make('zip'),
            ExportColumn::make('country'),
            ExportColumn::make('budget'),
            ExportColumn::make('period'),
            ExportColumn::make('property_type'),
            ExportColumn::make('property_payment'),
            ExportColumn::make('property_status'),
            ExportColumn::make('property_finished'),
            ExportColumn::make('property_location'),
            ExportColumn::make('residency'),
            ExportColumn::make('newsletter'),
            ExportColumn::make('partner'),
            ExportColumn::make('follow_up'),
            ExportColumn::make('follow_up_reminder'),
            ExportColumn::make('groups'),
            ExportColumn::make('additional_persons')
                ->listAsJson(),
            ExportColumn::make('additional_info')
                ->listAsJson(),
            ExportColumn::make('personal_info')
                ->listAsJson(),
            ExportColumn::make('notes'),
        ];
    }

    public static function getCompletedNotificationBody(Export $export): string
    {
        $body = 'Your client export has completed and '.number_format($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;
    }
}

my .env file

BROADCAST_CONNECTION=log
FILESYSTEM_DISK=s3
FILAMENT_FILESYSTEM_DISK=s3
QUEUE_CONNECTION=database

and I run in my console

php artisan queue:work

What I am doing wrong here?