尝试更改包中指定的react-native版本。将json(在dependencies - react-native下)改为与错误消息中显示的“Native Version”相同。然后再次运行'npm install'。

我试图从WebStorm中构建和运行一个React Native应用程序，然后遇到了这个问题。对我来说，简单的解决方案是:

watchman watch-del-all

在macOS上，如果watchman还没有安装，请使用Homebrew安装:

brew install watchman

关闭nodejs终端，重新构建。

尝试重新安装依赖项。这对我很管用

1.) yarn/npm install 2) yarn/npm start——reset-cache

这对我来说很管用:

react-native start --reset-cache

I've never seen this error before, but whenever I can't get Xcode and React-Native to play well together, I do a couple of things. Check what version of Xcode I'm working with. If it needs to be updated, I update it. Then clearing watchman and the cache are the second place I go. I don't use the reset cache command. It always says that I need to verify the cache, so I skip that (you can do it though, I just get confused). I use rm -rf $TMPDIR/react-* to get rid of any cached builds. If that doesn't work, I try to build the app in Xcode, then work my way from there, to build it with react-native run-ios. With this error message, it seems you might start by trying to build it with Xcode. Hope that helps...let me know your progress with it. Good luck! (Also, you could update to RN 0.51 as another attempt to get your versions synced.)