erpsaas/app/Filament/Company/Resources/Purchases/BillResource/Pages/CreateBill.php

<?php

namespace App\Filament\Company\Resources\Purchases\BillResource\Pages;

use App\Filament\Company\Resources\Purchases\BillResource;
use Filament\Resources\Pages\CreateRecord;

class CreateBill extends CreateRecord
{
    protected static string $resource = BillResource::class;
}