Upgrade to Magento 2.4.7 error in module-payment-services-base

Question

After upgrading from Magento 2.4.6 to 2.4.7 I receive the following error, everytime I try to access to payment method configuration (Stores -> Configuration -> Sales -> Payment Methods):

Exception: Warning: Undefined array key "children" in /var/www/html/vendor/magento/module-payment-services-base/Plugin/MovePaymentMethods.php on line 66 in /var/www/html/vendor/magento/framework/App/ErrorHandler.php:62

Question: Any ideas to solve that issue?

Stack trace:

#1 /var/www/html/vendor/magento/module-payment-services-base/Plugin/MovePaymentMethods.php(44): Magento\PaymentServicesBase\Plugin\MovePaymentMethods->moveMethodToOtherPaymentSolutions(Array, 'express_checkou...')
#2 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(146): Magento\PaymentServicesBase\Plugin\MovePaymentMethods->afterModify(Object(Magento\Paypal\Model\Config\Structure\PaymentSectionModifier\Interceptor), Array, Array)
#3 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Paypal\Model\Config\Structure\PaymentSectionModifier\Interceptor->Magento\Framework\Interception\{closure}(Array)
#4 /var/www/html/generated/code/Magento/Paypal/Model/Config/Structure/PaymentSectionModifier/Interceptor.php(22): Magento\Paypal\Model\Config\Structure\PaymentSectionModifier\Interceptor->___callPlugins('modify', Array, Array)
#5 /var/www/html/vendor/magento/module-paypal/Model/Config/StructurePlugin.php(143): Magento\Paypal\Model\Config\Structure\PaymentSectionModifier\Interceptor->modify(Array)
#6 /var/www/html/vendor/magento/module-paypal/Model/Config/StructurePlugin.php(119): Magento\Paypal\Model\Config\StructurePlugin->restructurePayments(Object(Magento\Config\Model\Config\Structure\Element\Section))
#7 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(135): Magento\Paypal\Model\Config\StructurePlugin->aroundGetElementByPathParts(Object(Magento\Config\Model\Config\Structure\Interceptor), Object(Closure), Array)

Answer 1

Updated File : vendor/magento/module-payment-services-base/Plugin/MovePaymentMethods.php

<?php

/************************************************************************
 *
 * Copyright 2014 Adobe
 * All Rights Reserved.
 *
 * NOTICE: All information contained herein is, and remains
 * the property of Adobe and its suppliers, if any. The intellectual
 * and technical concepts contained herein are proprietary to Adobe
 * and its suppliers and are protected by all applicable intellectual
 * property laws, including trade secret and copyright laws.
 * Dissemination of this information or reproduction of this material
 * is strictly forbidden unless prior written permission is obtained
 * from Adobe.
 * ************************************************************************
 */
declare(strict_types=1);

namespace Magento\PaymentServicesBase\Plugin;

use Magento\Paypal\Model\Config\Structure\PaymentSectionModifier;

class MovePaymentMethods
{
    private const RECOMMENDED_SOLUTIONS = 'recommended_solutions';
    private const CHILDREN = 'children';
    private const RECOMMENDED_SOLUTIONS_ALLOWED_LIST = ['magento_payments_legacy', 'magento_payments'];
    private const OTHER_PAYPAL_PAYMENT_SOLUTIONS = 'other_paypal_payment_solutions';

    /**
     * Move payment methods not allowed to other_paypal_payment_solutions
     *
     * @param PaymentSectionModifier $subject
     * @param array $result
     * @return array
     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
     */

    public function afterModify(PaymentSectionModifier $subject, $result)
    {
        if (isset($result[self::RECOMMENDED_SOLUTIONS][self::CHILDREN])) {
            foreach (array_keys($result[self::RECOMMENDED_SOLUTIONS][self::CHILDREN]) as $key) {
                if (!in_array($key, self::RECOMMENDED_SOLUTIONS_ALLOWED_LIST, true)) {
                    $result = $this->moveMethodToOtherPaymentSolutions($result, $key);
                }
            }
        }

        return $result;
    }

    /**
     * Move other payment method by key to other_paypal_payment_solutions
     *
     * @param array $result
     * @param int|string $key
     * @return array
     */
    public function moveMethodToOtherPaymentSolutions(array $result, int|string $key): array
    {
        if (isset($result[self::RECOMMENDED_SOLUTIONS][self::CHILDREN][$key])) {
            if (!isset($result[self::OTHER_PAYPAL_PAYMENT_SOLUTIONS][self::CHILDREN])) {
                $result[self::OTHER_PAYPAL_PAYMENT_SOLUTIONS][self::CHILDREN] = [];
            }

$result[self::OTHER_PAYPAL_PAYMENT_SOLUTIONS][self::CHILDREN] =
    array_merge(
        [
            $result[self::RECOMMENDED_SOLUTIONS][self::CHILDREN][$key]
        ],
        $result[self::OTHER_PAYPAL_PAYMENT_SOLUTIONS][self::CHILDREN]
    );

unset($result[self::RECOMMENDED_SOLUTIONS][self::CHILDREN][$key]);
}
return $result;
}
}

Answer 2

the problem seems to be the "new Adobe payment" plugin. The solution above "MovePaymentMethods.php" works but strangely on one server the problem did not occur after upgrade to 2.4.7

Answer 3

As a workaround, you can disable the plugin from a custom module. etc/adminhtml/di.xml:

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Paypal\Model\Config\Structure\PaymentSectionModifier">
        <plugin name="move_express_checkout_us_to_other_paypal_payment_solutions" disabled="true"/>
    </type>
</config>