Validate config "openAPI" failed, "serversPath" is not allowed

[elpwc]

设置 serversPath 後，运行 npm run openapi 报错：

PS > npm run openapi

> umi openapi

Validate config "openAPI" failed, "serversPath" is not allowed
ValidationError: "serversPath" is not allowed

.umirc.ts 内容：

import * as appconfig from './appconfig';

export default {
  openAPI: {
    requestLibPath: "import request from '../../utils/request'",
    schemaPath: `${appconfig.default.apiBaseURL}/api-json`,
    mock: false,
    serversPath: './services/',
  },
};

[elpwc]

放弃 umi 配置，直接使用 openapi.config.ts 後成功生成了