git 开发服务器返回响应错误代码 500 - react native - ./configs/main
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the development server returned response error code 500 - react native - ./configs/main
提问by gaback
I got this error when i tried to make hello-worldsample:react-native init hello_world
cd hello_world
react-native run-android
当我尝试制作hello-world样品时出现此错误：react-native init hello_world
cd hello_world
react-native run-android
Even when I ran:npm install -g react-native-git-upgrade
react-native-git-upgrade
I got same error on commend line console.
即使我跑了：npm install -g react-native-git-upgrade
react-native-git-upgrade
我在commend line console.
I've searched and tried many solutions but it doesn't seem to work:
Example:
* upgrade react-native
* using watchman watchman watch-del-all
* remove node_modules
* clean cache npm cache cleanor npm start -- --reset-cache
我已经搜索并尝试了许多解决方案，但它似乎不起作用：例如：
* upgrade react-native
* 使用守望者watchman watch-del-all
* 删除node_modules
* 清理缓存npm cache clean或npm start -- --reset-cache
Operation: Window 8
react-native-cli: 2.0.1
react-native: 0.44.2 ( tried 0.47.1 too )
Android: Simulator Nexus5X
操作：Window 8
react-native-cli: 2.0.1
react-native: 0.44.2 ( 也尝试过 0.47.1 )
Android: Simulator Nexus5X
Thank you all in advance!
谢谢大家！
回答by Paras Watts
Delete babel-preset-react-nativefolder inside node_modulesand then install older version 2.1.0 of this library with npm install [email protected] --save-dev.
删除babel-preset-react-native里面的文件夹node_modules，然后安装这个库的旧版本 2.1.0 npm install [email protected] --save-dev。
回答by MRX
In case if someone is using react-native: 0.57.1 or the latest one,babel-preset-react-native has been replaced by metro-react-native-babel-preset. if you still get 500 error while connecting to the device do the below step and I guess things will be fine
如果有人使用 react-native: 0.57.1 或最新版本，babel-preset-react-native 已被 Metro-react-native-babel-preset 取代。如果在连接到设备时仍然出现 500 错误，请执行以下步骤，我想一切都会好起来的
npm add @babel/runtime
npm install
回答by Cevin Ways
For me it's about the react native version. I just install the new version of react native "0.59.2" then i downgrade to previous version to "0.55.2", and everything works fine.
对我来说，这是关于本机版本的反应。我只是安装了新版本的 react native“0.59.2”，然后我降级到以前的版本到“0.55.2”，一切正常。
回答by Ravichandra S V
Downgrade the following:
降级以下内容：
react-native init Project
cd Project
npm uninstall react-native
npm install --save [email protected]
npm uninstall --save babel-preset-react-native
npm install --save [email protected]
react-native run-android
