MediaWiki升级到1.43后，扩展TreeAndMenu不工作了，而作者的更新停止在了4.2.5（2021-10-31）。
从讨论中可以看到已经有网友联系作者（但似乎没有回应）并提交了修改补丁，主要针对的是extension.json文件。
其一是将jQuery.cookie切换到mediawiki.cookie，其二是对其中的配置方式进行了修订。
根据上述内容修改后的代码如下：

{
    "name": "TreeAndMenu",
    "version": "4.2.5, 2021-10-31",
    "author": [
        "[http://www.organicdesign.co.nz/aran Aran Dunkley]",
        "[http://absorto.dev Igor Absorto]"
    ],
    "url": "https://www.mediawiki.org/wiki/Extension:TreeAndMenu",
    "descriptionmsg": "treeandmenu-desc",
    "license-name": "[https://www.gnu.org/licenses/gpl-2.0.html GNU General Public Licence 2.0] or later",
    "type": "parserhook",
    "callback": "TreeAndMenu::onRegistration",
    "config": {
        "TreeAndMenuPersistIfId": {
            "description": "Makes trees with id attributes have persistent state",
            "public": true,
            "value": false
        },
        "TreeAndMenuSidebarMenuPage": {
            "description": "Specify menu page to be used as a sidebar menu",
            "public": true,
            "value": false
        },
        "TreeAndMenuSidebarMenuHeading": {
            "description": "Specify the heading line for sidebar menu",
            "public": true,
            "value": false
        }
    },
    "AutoloadClasses": {
        "TreeAndMenu": "TreeAndMenu_body.php"
    },
    "ExtensionMessagesFiles": {
        "TreeAndMenuMagic": "TreeAndMenu.i18n.magic.php"
    },
    "MessagesDirs": {
        "TreeAndMenu": ["i18n"]
    },
    "Hooks": {
        "SkinBuildSidebar": "TreeAndMenu::onSkinBuildSidebar"
        },
    "ResourceModules": {
        "ext.treeandmenu": {
            "styles": ["fancytree/fancytree.css", "suckerfish/suckerfish.css"],
            "scripts": [
                "fancytree/jquery.fancytree.js",
                "fancytree/jquery.fancytree.persist.js",
                "fancytree/jquery.fancytree.mediawiki.js",
                "fancytree/fancytree.js",
                "suckerfish/suckerfish.js"
            ],
            "dependencies": [
                "jquery.ui",
                "mediawiki.cookie",
                "jquery.client"
            ],
            "targets": [
                "desktop",
                "mobile"
            ]
        }
    },
    "ResourceFileModulePaths": {
        "localBasePath": "",
        "remoteExtPath": "TreeAndMenu"
    },
    "manifest_version": 2
}

更新完毕后，刷新页面，恢复正常。