react native windows 启动报错处理unble to load script.Make sure you are either running a Metro server...

react native项目初始化启动报错。报错如下图所示

    

解决办法： 找到reactDemo\android\app\build.gradle里面的build.gradle文件，搜索project.ext.react，并找到如下js

project.ext.react = [
    enableHermes: false,  // clean and rebuild if changing
]

修改为

project.ext.react = [
    enableHermes: false,  // clean and rebuild if changing
    bundleAssetName: "index.android.bundle",
    bundleInDebug: true,
    bundleInRelease: true
]

然后重新启动yarn android 或者npm run android

解决来源： https://github.com/facebook/react-native/issues/22076

本文地址：https://blog.csdn.net/Lschange/article/details/107974261