react-native: Cannot find entry file index.android.js in any of the roots

PC: Windows 7 Node: v4.2.4 Python: 2.7.10 npm: 2.14.12 Proxy: 127.0.0.1:8087 react-native: 0.1.7

When i run the command react-native start,then browse in the chrome with the url: http://localhost:8081/index.android.bundle?platform=android&dev=true

it shows error message as follows:

{
message: "Cannot find entry file index.android.js in any of the roots: ["D:\\workspace\\snowdream\\git\\react_native_helloworld"]",
name: "NotFoundError",
type: "NotFoundError",
status: 404,
errors: [
{ }
]
}

About this issue

Original URL
State: closed
Created 8 years ago
Comments: 17 (2 by maintainers)

Most upvoted comments

I has the same problem too. fixed founction: 1、react-native start 2、react-native run-android will fix the problem.

damiaozi on Jun 8, 2017

It’s 2017, and this issue still persists. Worst experience as first timer like me. Have been looking for solution, but no real working solution yet. Happens on two computers, two operating systems each (windows and linux), all failed.

subsub on Jun 8, 2017

I has the same problem too.But fixed after I edit the file index.android.js . I found before i edit index.android.js ，in file fastfs.js

_getFile(filePath) { filePath = path.normalize(filePath); if (!hasOwn.call(this._fastPaths, filePath)) { this._fastPaths[filePath] = this._getAndAssertRoot(filePath).getFileFromPath(filePath); }

return this._fastPaths[filePath];

}

“hasOwn.call(this._fastPaths, filePath)” return true，but code “this._fastPaths[filePath]” return undefined。

jiajw0426 on Mar 16, 2016

Hey snowdream, thanks for reporting this issue!

React Native, as you’ve probably heard, is getting really popular and truth is we’re getting a bit overwhelmed by the activity surrounding it. There are just too many issues for us to manage properly.

If you don’t know how to do something or something is not working as you expect but not sure it’s a bug, please ask on StackOverflow with the tag react-native or for more real time interactions, ask on Discord in the #react-native channel.
If this is a feature request or a bug that you would like to be fixed, please report it on Product Pains. It has a ranking feature that lets us focus on the most important issues the community is experiencing.
We welcome clear issues and PRs that are ready for in-depth discussion. Please provide screenshots where appropriate and always mention the version of React Native you’re using. Thank you for your contributions!

facebook-github-bot on Jan 7, 2016

i also assume you have tried: node node_modules/react-native/local-cli/cli.js start --reset-cache

st0ffern on Jun 8, 2017

When I eject mobile hard disk everything is ok.But i do not know why.

jiajw0426 on Mar 21, 2016

@stoffern Now it’s working. Here’s how. After asking my friend and he also struggles to find out why, who couldn’t help to make it work after all. After he gave up, at the end, I then check all the version: os (windows 10, same), node (me: 6.11.0, him: 6.10.3), npm (3.10.10, same). I find we all use the same version except node js. I use latest node js v6.11.0 while he uses 6.10.3. So I uninstall nodejs, and install version 6.10.3, and try to build new project, and turns out it works. So for me, node js is the problem. v6.11.0 definitely not working for me.

subsub on Jun 10, 2017