newsupernova/vendor/magento/module-captcha/etc/adminhtml/di.xml

<?xml version="1.0"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <preference for="Magento\Captcha\Block\Captcha\DefaultCaptcha" type="Magento\Captcha\Block\Adminhtml\Captcha\DefaultCaptcha" />
    <type name="Magento\Captcha\Model\DefaultModel">
        <arguments>
            <argument name="session" xsi:type="object">Magento\Backend\Model\Auth\Session</argument>
            <argument name="captchaData" xsi:type="object">Magento\Captcha\Helper\Adminhtml\Data</argument>
        </arguments>
    </type>
    <type name="Magento\Captcha\Observer\CheckUserCreateObserver">
        <arguments>
            <argument name="session" xsi:type="object">Magento\Backend\Model\Session</argument>
        </arguments>
    </type>
    <type name="Magento\Captcha\Observer\CheckUserForgotPasswordBackendObserver">
        <arguments>
            <argument name="session" xsi:type="object">Magento\Backend\Model\Session</argument>
        </arguments>
    </type>
    <type name="Magento\Captcha\Observer\CheckUserLoginObserver">
        <arguments>
            <argument name="session" xsi:type="object">Magento\Backend\Model\Session</argument>
        </arguments>
    </type>
</config>