Error: Cannot instantiate abstract class Magento\Framework\Model\ResourceModel\AbstractResource

Question

I have Magento enterprise version 2.4.5-p1, I am getting following error in the system.log

Error:- .CRITICAL: Error: Cannot instantiate abstract class Magento\Framework\Model\ResourceModel\AbstractResource in /var/www/html/vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php:121

I thought the issue is in this constructor parameter code which I have overridden from default Magento RMA's Model,

public function __construct(
 \Magento\Framework\Model\Context $context,
 \Magento\Framework\Registry $registry,
 \Magento\Framework\Api\ExtensionAttributesFactory $extensionFactory,
 AttributeValueFactory $customAttrFactory,
 \Magento\Store\Model\StoreManagerInterface $storeManager,
 \Magento\Rma\Model\RmaFactory $rmaFactory,
 \Magento\Rma\Model\Config $rmaConfig,
 \Magento\Framework\Mail\Template\TransportBuilder $transportBuilder,
 \Magento\Framework\Stdlib\DateTime\DateTime $dateTimeDateTime,
 \Magento\Framework\Translate\Inline\StateInterface $inlineTranslation,
 \Magento\Rma\Helper\Data $rmaHelper,
 TimezoneInterface $localeDate,
 RmaRepositoryInterface $rmaRepoInterface,
 RmaAttributesManagementInterface $metadataService,
 AddressRenderer $addressRenderer,
 RmaEntityFactory $customReturn,
 \Magento\Framework\Model\ResourceModel\AbstractResource $resource = null,
 \Magento\Framework\Data\Collection\AbstractDb $resourceCollection = null,
 array $data = []
) {
 parent::__construct(
 $context,
 $registry,
 $extensionFactory,
 $customAttrFactory,
 $storeManager,
 $rmaFactory,
 $rmaConfig,
 $transportBuilder,
 $dateTimeDateTime,
 $inlineTranslation,
 $rmaHelper,
 $localeDate,
 $rmaRepoInterface,
 $metadataService,
 $addressRenderer,
 $resource,
 $resourceCollection,
 $data
 );
 $this->storeManager = $storeManager;
 $this->rmaConfig = $rmaConfig;
 $this->transportBuilder = $transportBuilder;
 $this->inlineTranslation = $inlineTranslation;
 $this->rmaHelper = $rmaHelper;
 $this->addressRenderer = $addressRenderer;
 $this->customReturn = $customReturn;
}

Can anyone have idea, where am I doing wrong ?

Thanks in advance

• Charmi Patel: run this command and check it resolved or not ? rm -rf generated/* var/cache var/page_cache
• Charmi Patel: Also Need to check all variables passed of the parent class in the construct or not
• Mitul Vadalia: @CharmiPatel, appreciate your response, I already passed all the parents class parameters in constructor, and also tried running deploy command and tried removing generated and var folder
• Charmi Patel: please replace with the whole file here

Answer 1

This happens when any of our custom or third party extension has default parameter in between for __construct() arguments instead of at the end. (Optional parameter should be add at the end in custom extension or third party extension)

Please check which action you're performing while getting this error. One of the classes involved in this action can have a default parameter in between, like below:

enter image description here

Need to move array $data = [] at the last position because it has a default value.