After upgrade magento2.4 showing 500 error in block in my new product module

[webkeonsanjeev]

Hi Guys,

After upgrade magento 2.4 my custom newproduct module showing 500 error in block but I am not found where is the issue, Any one can help?

<?php

namespace xxx\yyy\Block\Index;

use Magento\Catalog\Api\CategoryRepositoryInterface;

class NewProduct extends \Magento\Catalog\Block\Product\ListProduct
{
    protected $_productnewCollection;
    protected $_productloader;
   protected $_newhelper;

    public function __construct(
        \Magento\Catalog\Block\Product\Context $context,
        \Magento\Framework\Data\Helper\PostHelper $postDataHelper,
        \Magento\Catalog\Model\Layer\Resolver $layerResolver,
        CategoryRepositoryInterface $categoryRepository,
        \Magento\Framework\Url\Helper\Data $urlHelper,
        \Magento\Catalog\Model\ResourceModel\Product\CollectionFactory $productnewCollectionFactory, 
        \Magento\Catalog\Model\ProductFactory $_productloader,
        \xxx\yyy\Helper\Data $newhelper,
        array $data = []) {

        $this->_productnewCollection = $productnewCollectionFactory;
        $this->_productloader = $_productloader;
        $this->_newhelper = $newhelper;
        parent::__construct($context, $postDataHelper, $layerResolver, $categoryRepository, $urlHelper, $data);

    }

    public function getNewProductCollection()
    {
         $collection = $this->_productnewCollection->create();
         $todayDate  = date('Y-m-d');
         $collection->addAttributeToFilter('news_from_date', array('date' => true, 'to' => $todayDate));
         $collection->setPageSize(8);
         $collection->setOrder('position','DESC');
         return $collection;
    }

    public function getNewProduct($entity_id)
    {
        return $this->_productloader->create()->load($entity_id);
    }

}