Error. Could not save child: "Unknown entity type: Magento\Bundle\Model\Selection\Interceptor requested"

[faradey]

Preconditions and environment

• Magento version 2.4.6, 2.4.7, 2.4.8

Steps to reproduce

1. Create a module VendorName/ModuleName.

2. Add a plugin in the app/code/VendorName/ModuleName/etc/adminhtml/di.xml file:

<type name="Magento\Framework\DataObject">
<plugin name="VendorName\ModuleName\Plugin\MagentoFramework\Model\DataObjectPlugin"
type="VendorName\ModuleName\Plugin\MagentoFramework\Model\DataObjectPlugin"
disabled="false" sortOrder="1000"/>
</type>

3. Create the class VendorName\ModuleName\Plugin\MagentoFramework\Model\DataObjectPlugin:

<?php
/**
* Copyright © VendorName. All rights reserved.
*/

namespace VendorName\ModuleName\Plugin\MagentoFramework\Model;

use Error;
use Exception;
use VendorName\ModuleName\Helper\DataRegistry;
use VendorName\ModuleName\Helper\ActionLog;
use Magento\Framework\App\Area;
use Magento\Framework\App\Config\ScopeConfigInterface;
use Magento\Framework\App\RequestInterface;
use Magento\Framework\App\State;
use Magento\Framework\DataObject;
use Psr\Log\LoggerInterface;

class DataObjectPlugin
{
public ScopeConfigInterface $config;
public LoggerInterface $logger;
public DataRegistry $registry;
public ActionLog $actionLog;
public RequestInterface $request;
public State $state;

public function __construct(
ScopeConfigInterface $config,
LoggerInterface      $logger,
DataRegistry         $registry,
ActionLog            $actionLog,
RequestInterface     $request,
State                $state
) {
$this->config = $config;
$this->logger = $logger;
$this->registry = $registry;
$this->actionLog = $actionLog;
$this->request = $request;
$this->state = $state;
}

/**
* @param DataObject $subject
* @param $result
* @return DataObject
*/
public function afterBeforeSave(
DataObject $subject,
$result
) {
if (!($subject instanceof \Magento\Framework\Model\AbstractModel)) {
return $result;
}

try {
if ((int)$this->config->getValue(ActionLog::XML_PATH_ENABLE) == 1
&& (int)$this->config->getValue(ActionLog::XML_PATH_ENABLE_REVERT) == 1
&& $this->state->getAreaCode() == Area::AREA_ADMINHTML
&& !empty($this->request->getParams())
&& !$this->actionLog->isUnusedModel($subject)
) {
$registryData = $this->registry->getValue(ActionLog::REGISTRY_KEY_REVERT) ?? [];
if (!isset($registryData[get_class($subject)])) {
$registryData[get_class($subject)] = [];
}
$registryData[get_class($subject)][] = [
'id' => $subject->getId(),
'action_type' => $subject->getId() == null ? 'create' : 'update',
'before' => $this->actionLog->getOrigData($subject),
'status' => false,
];
$this->registry->unsValue(ActionLog::REGISTRY_KEY_REVERT);
$this->registry->setValue(ActionLog::REGISTRY_KEY_REVERT, $registryData);
}
} catch (Exception|Error $e) {
$this->logger->critical($e->getMessage());
}

return $result;
}

/**
* @param DataObject $subject
* @return void
*/
public function beforeAfterSave(
DataObject $subject
) {
if (!($subject instanceof \Magento\Framework\Model\AbstractModel)) {
return;
}

try {
if ((int)$this->config->getValue(ActionLog::XML_PATH_ENABLE) == 1
&& (int)$this->config->getValue(ActionLog::XML_PATH_ENABLE_REVERT) == 1
&& $this->state->getAreaCode() == Area::AREA_ADMINHTML
&& !empty($this->request->getParams())
&& !$this->actionLog->isUnusedModel($subject)
&& $subject->getId()
) {
$registryData = $this->registry->getValue(ActionLog::REGISTRY_KEY_REVERT) ?? [];
if (!empty($registryData[get_class($subject)])) {
foreach ($registryData[get_class($subject)] as &$registryDatum) {
if ((!empty($registryDatum['id']) && $registryDatum['id'] == $subject->getId())
|| ($subject->getId() && empty($registryDatum['id']) && $registryDatum['action_type'] == 'create')
) {
$registryDatum['id'] = $subject->getId();
$registryDatum['status'] = true;
$registryDatum['scope'] = $this->actionLog->getScope();
$registryDatum['scope_id'] = $this->actionLog->getStoreId($subject);
}
}
$this->registry->unsValue(ActionLog::REGISTRY_KEY_REVERT);
$this->registry->setValue(ActionLog::REGISTRY_KEY_REVERT, $registryData);
}
}
} catch (Exception|Error $e) {
$this->logger->critical($e->getMessage());
}
}

public function beforeBeforeDelete(
DataObject $subject
) {
if (!($subject instanceof \Magento\Framework\Model\AbstractModel)) {
return;
}

try {
if ((int)$this->config->getValue(ActionLog::XML_PATH_ENABLE) == 1
&& (int)$this->config->getValue(ActionLog::XML_PATH_ENABLE_REVERT) == 1
&& $this->state->getAreaCode() == Area::AREA_ADMINHTML
&& !empty($this->request->getParams())
&& !$this->actionLog->isUnusedModel($subject)
) {
$registryData = $this->registry->getValue(ActionLog::REGISTRY_KEY_REVERT) ?? [];
if (!isset($registryData[get_class($subject)])) {
$registryData[get_class($subject)] = [];
}
$registryData[get_class($subject)][] = [
'id' => $subject->getId(),
'status' => true,
'action_type' => 'delete',
'scope' => $this->actionLog->getScope(),
'scope_id' => $this->actionLog->getStoreId($subject),
'before' => $this->actionLog->getOrigData($subject),
];
$this->registry->unsValue(ActionLog::REGISTRY_KEY_REVERT);
$this->registry->setValue(ActionLog::REGISTRY_KEY_REVERT, $registryData);
}
} catch (Exception|Error $e) {
$this->logger->critical($e->getMessage());
}
}
}

4. Execute bin/magento setup:upgrade.

5. Create/update a bundle product.

Expected result

The product is saved without errors.

Actual result

When saving the product, we get the error:
Could not save child: "Unknown entity type: Magento\Bundle\Model\Selection\Interceptor requested"

Additional information

No response

Release note

No response

Triage and priority

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant]

Hi @faradey. Thank you for your report.
To speed up processing of this issue, make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce.

• For more details, review the Magento Contributor Assistant documentation.
• Add a comment to assign the issue: @magento I am working on this
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[m2-assistant]

Hi @engcom-November. Thank you for working on this issue.
In order to make sure that issue has enough information and ready for development, please read and check the following instruction: 👇

• 1. Verify that issue has all the required information. (Preconditions, Steps to reproduce, Expected result, Actual result).
• 2. Verify that issue has a meaningful description and provides enough information to reproduce the issue.
• 3. Add Area: XXXXX label to the ticket, indicating the functional areas it may be related to.
• 4. Verify that the issue is reproducible on 2.4-develop branch
  Details

  - If the issue is reproducible on 2.4-develop branch, please, add the label Reproduced on 2.4.x.
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• 5. Add label Issue: Confirmed once verification is complete.
• 6. Make sure that automatic system confirms that report has been added to the backlog.

[m2-assistant]

Hi @engcom-Hotel. Thank you for working on this issue.
In order to make sure that issue has enough information and ready for development, please read and check the following instruction: 👇

• 1. Verify that issue has all the required information. (Preconditions, Steps to reproduce, Expected result, Actual result).
• 2. Verify that issue has a meaningful description and provides enough information to reproduce the issue.
• 3. Add Area: XXXXX label to the ticket, indicating the functional areas it may be related to.
• 4. Verify that the issue is reproducible on 2.4-develop branch
  Details

  - If the issue is reproducible on 2.4-develop branch, please, add the label Reproduced on 2.4.x.
  - If the issue is not reproducible, add your comment that issue is not reproducible and close the issue and stop verification process here!
• 5. Add label Issue: Confirmed once verification is complete.
• 6. Make sure that automatic system confirms that report has been added to the backlog.

[engcom-Hotel]

Hello @faradey,

Thanks for the report and collaboration!

As we can see in the issue description you can tried to create a plugin on lib/internal/Magento/Framework/DataObject.php which is a good practice for the below reason:

• DataObject is an extremely fundamental class in Magento that serves as the base for virtually every data container in the system.
• Performance Impact: This would create significant overhead as your plugin would fire constantly throughout the application lifecycle.

Also the methods names are not valid defined in the plugin class. I recommend you to go through with the below documentation to create plugins in Magento:

https://developer.adobe.com/commerce/php/development/components/plugins/

Thanks