Cannot instantiate abstract class Magento\Framework\Data\Collection\AbstractResource

Question

I am getting this error on my homepage after upgrading my Magento version from 2.4.0 to 2.4.6.

Error: Cannot instantiate abstract class Magento\Framework\Data\Collection\AbstractResource in /home/websites/hollywoo/dev/public_html/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php:121 Stack trace: #0 /home/websites/hollywoo/dev/public_html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(108): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject() #1 /home/websites/hollywoo/dev/public_html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(150): Magento\Framework\ObjectManager\Factory\Compiled->create() #2 /home/websites/hollywoo/dev/public_html/vendor/magento/framework/ObjectManager/Factory/Compiled.php(79): Magento\Framework\ObjectManager\Factory\Compiled->get() #3 /home/websites/hollywoo/dev/public_html/vendor/magento/framework/ObjectManager/ObjectManager.php(56): Magento\Framework\ObjectManager\Factory\Compiled->create() #4 /home/websites/hollywoo/dev/public_html/generated/code/Jes/BannerProductSlider/Model/SliderFactory.php(43): Magento\Framework\ObjectManager\ObjectManager->create() #5 /home/websites/hollywoo/dev/public_html/app/code/Jes/BannerProductSlider/Helper/Data.php(193): Jes\BannerProductSlider\Model\SliderFactory->create() #6 /home/websites/hollywoo/dev/public_html/app/code/Jes/DynamicPages/Block/Pages/HomePage.php(110): Jes\BannerProductSlider\Helper\Data->getActiveSliders() #7 /home/websites/hollywoo/dev/public_html/app/code/Jes/DynamicPages/view/frontend/templates/bannerslider.phtml(27): Jes\DynamicPages\Block\Pages\HomePage->getActiveSliders()

I know it is because of the model code. Providing model code of Jes extension

<?php
namespace Jes\BannerProductSlider\Model;
use Magento\Framework\Data\Collection\AbstractDb;
use Magento\Framework\Model\AbstractModel;
use Magento\Framework\Model\Context;
use Magento\Framework\Model\ResourceModel\AbstractResource;
use Magento\Framework\Registry;
use Jes\BannerProductSlider\Model\ResourceModel\Banner\Collection;
use Jes\BannerProductSlider\Model\ResourceModel\Banner\CollectionFactory;
use Magento\Framework\App\ResourceConnection;
class Slider extends AbstractModel
{
 /**
 * Cache tag
 *
 * @var string
 */
 const CACHE_TAG = 'jes_bannerproductslider_slider';
 /**
 * Cache tag
 *
 * @var string
 */
 protected $_cacheTag = 'jes_bannerproductslider_slider';
 /**
 * Event prefix
 *
 * @var string
 */
 protected $_eventPrefix = 'jes_bannerproductslider_slider';
 /**
 * Banner Collection
 *
 * @var Collection
 */
 protected $bannerCollection;
 /**
 * Banner Collection Factory
 *
 * @var CollectionFactory
 */
 protected $bannerCollectionFactory;
 protected $_resourceConnection;
 /**
 * constructor
 *
 * @param CollectionFactory $bannerCollectionFactory
 * @param Context $context
 * @param Registry $registry
 * @param AbstractResource $resource
 * @param AbstractDb $resourceCollection
 * @param array $data
 */
 public function __construct(
 CollectionFactory $bannerCollectionFactory,
 Context $context,
 Registry $registry,
 AbstractResource $resource = null,
 AbstractDb $resourceCollection = null,
 ResourceConnection $resourceConnection,
 array $data = []
 ) {
 $this->bannerCollectionFactory = $bannerCollectionFactory;
 $this->_resourceConnection =$resourceConnection; 
 parent::__construct($context, $registry, $resource, $resourceCollection, $data);
 }
 /**
 * Initialize resource model
 *
 * @return void
 */
 protected function _construct()
 {
 $this->_init('Jes\BannerProductSlider\Model\ResourceModel\Slider');
 }
 /**
 * Get identities
 *
 * @return array
 */
 public function getIdentities()
 {
 return [self::CACHE_TAG . '_' . $this->getId()];
 }
 /**
 * get entity default values
 *
 * @return array
 */
 public function getDefaultValues()
 {
 $values = [];
 $values['status'] = '1';
 return $values;
 }
 /**
 * @return array|mixed
 */
 public function getBannersPosition()
 {
 if (!$this->getId()) {
 return [];
 }
 $array = $this->getData('banners_position');
 if ($array === null) {
 $array = $this->getResource()->getBannersPosition($this);
 $this->setData('banners_position', $array);
 }
 return $array;
 }
 /**
 * @return Collection
 */
 public function getSelectedBannersCollection()
 {
 if ($this->bannerCollection === null) {
 $collection = $this->bannerCollectionFactory->create();
 $collection->getSelect()->join(
 ['banner_slider' => $this->getResource()->getTable('jes_bannerproductslider_banner_slider')],
 'main_table.banner_id=banner_slider.banner_id AND banner_slider.slider_id=' . $this->getId(),
 ['position']
 );
 $this->bannerCollection = $collection;
 }
 return $this->bannerCollection;
 }
 public function deleteBanners($sliderId)
 {
 $this->_resourceConnection->getConnection()->delete('jes_bannerproductslider_banner_slider',["slider_id ", $sliderId]);
 }
}

Answer 1

Optional parameter is provided before required.

AbstractDb $resourceCollection = null,
ResourceConnection $resourceConnection

Therefore, if ResourceConnection $resourceConnection is a required parameter, it should come before the parameter with the optional value AbstractDb $resourceCollection = null. Based on this, your constructor should look like the following:

public function __construct(
 CollectionFactory $bannerCollectionFactory,
 Context $context,
 Registry $registry,
 ResourceConnection $resourceConnection,
 AbstractResource $resource = null,
 AbstractDb $resourceCollection = null,
 array $data = []
) {
 $this->bannerCollectionFactory = $bannerCollectionFactory;
 $this->_resourceConnection =$resourceConnection; 
 parent::__construct($context, $registry, $resource, $resourceCollection, $data);
}

• Tisha Jhanwar: Yes you are correct!