最近在处理公司老项目时，遇到这个问题。

这个问题产生原因：依赖项 @ant-design/pro-xxx 需要的基础样式是从 antd 引入的，但是 antd 的基础变量里面把这个删除了，所以会报这个错误。

解决方案

1. 固定 @ant-design/pro-xxx 版本

项目中报错依赖信息

"dependencies": {
    ...
    "@ant-design/pro-descriptions": "^1.9.0",
    "@ant-design/pro-form": "^1.43.0",
    "@ant-design/pro-layout": "^6.26.0",
    "@ant-design/pro-table": "^2.56.0",
    "@umijs/route-utils": "^2.0.3",
    "antd": "4.16.13",
}

固定 @ant-design/pro-xxx 版本：

"dependencies": {
    ...
    "@ant-design/pro-descriptions": "1.9.0",
    "@ant-design/pro-form": "1.43.0",
    "@ant-design/pro-layout": "6.26.0",
    "@ant-design/pro-table": "2.56.0",
    "@umijs/route-utils": "2.0.3",
    "antd": "4.16.13",
}

2. 升级 antd 版本

项目之前版本是 4.16.13

"dependencies": {
    ...
    "antd": "4.16.13",
}

升级后版本：4.20.0

"dependencies": {
    ...
    "antd": "4.20.0",
}

3. 定义 primary-color-hover 变量值

在config/config.ts中设置一个less变量：

theme: {
    ...
    "primary-color-hover": defaultSettings.primaryColor,
},