错误：已加载补丁：ZoneAwarePromise

Question

我们尝试为Angular 5项目进行服务器端渲染构建，然后显示此错误。区域js加载在我的polyfills.ts上，如何修复它是什么问题。

我在mys server.js文件中两次观察相同的区号，谢谢

Error: Already loaded patch: ZoneAwarePromise
    at E:\ecap3\ecap3-webclient-selectnetwork\dist\server.js:628850:6
    at FUNCTION (E:\ecap3\ecap3-webclient-selectnetwork\dist\server.js:628213:10)
    at Object.<anonymous> (E:\ecap3\ecap3-webclient-selectnetwork\dist\server.js:628216:2)
    at __webpack_require__ (E:\ecap3\ecap3-webclient-selectnetwork\dist\server.js:372510:30)