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当我运行命令 webpack-dev-server --open --mode development 时，我得到了如图所示的输出。我不知道该怎么办？我已经被困在这几个小时了。但是当我使用以下命令 webpack --mode production 准备构建并从 dist 文件夹中打开 index.html 文件时，它在浏览器中运行良好。

当我运行命令 webpack-dev-server --open --mode development 时，我得到如图所示的输出

我的 package.json 文件

{
    "name": "rapp",
    "version": "1.0.0",
    "description": "react app",
    "main": "index.js",
    "scripts": {
        "start": "npm run build",
        "build": "webpack-dev-server --open --mode development",
        "build:prod": "webpack --mode production"
    },
    "keywords": [
        "learning",
        "react"
    ],
    "author": "Rafay Hassan",
    "license": "MIT",
    "dependencies": {
        "babel-core": "^6.26.3",
        "babel-preset-env": "^1.7.0",
        "babel-preset-react": "^6.24.1",
        "react": "^16.8.1",
        "react-dom": "^16.8.1"
    },
    "devDependencies": {
        "babel-loader": "^7.*",
        "html-loader": "^0.5.5",
        "html-webpack-plugin": "3.0.7",
        "webpack": "^4.29.3",
        "webpack-cli": "^3.2.3",
        "webpack-dev-server": "^3.1.14"
    }
}
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