启动时出现Angular 8错误

编程问答 2022-08-13

问题描述

当我使用“ ng serve”命令启动角度应用程序时，我在chrome开发人员工具控制台中看到以下错误：

Angular is running in the development mode. Call enableProdMode() to enable the production mode.
index.js:7 Error: Invalid value type
    at Function.a.set (index.js:7)
    at t.setIsTrutedEnforced (index.js:7)
    at index.js:49
a.set @ index.js:7
t.setIsTrutedEnforced @ index.js:7
(anonymous) @ index.js:49
Promise.then (async)
h @ index.js:49
(anonymous) @ index.js:49
(anonymous) @ index.js:7
n @ index.js:49
index.js:7 Uncaught (in promise) Error: Given action "NormalMode/SetPageData",reducer "isTrustedEnforced" returned undefined. To ignore an action,you must explicitly return the previous state. If you want this reducer to hold no value,you can return null instead of undefined.
    at index.js:7
    at Object.g [as dispatch] (index.js:7)
    at t.SetPageData (index.js:7)
    at index.js:49

解决方法

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