Cannot find entry file index.android.js in any of the roots

[rushabhmakwana-multidots]

[coma]

I'm getting this too on a freshly created app (react-native init foo) using react-native-cli 2.0.1 on OSx.

[rushabhmakwana-multidots]

@coma Same here.

[coma]

The bundling process is failing somehow...

[rushabhmakwana-multidots]

Yup..waiting for an expert to help here.

[thomaschauffour]

Same problem since upgrade react native 0.44 to 0.45

[engladgut]

react-native-git-upgrade 0.44.0

I know this not the answer for 0.45 but this solved all my problem like yours or this one -> 14209

I think I will stay at 0.44.0 for now. 0.44.1~3? Didn't work for me.

[coma]

Yupe, after initing a new app, just downgraded to react-native@0.44.2 and it's working now...

[aramiscubillo]

Yeap, downgraded to 0.44.0 and works now. In cause somebody doesn't know how to downgrade react, you need to install: https://github.com/facebook/react-native/tree/master/react-native-git-upgrade

[ngtranthanhtoan]

Me too get the same. Hope someone help

[GetSource1234]

Got the same issue.

[cricketnest]

Same issue.

[juhasuni]

The same issue occurred to me after upgrading from 0.44. In my case react-native start --reset-cache was the key for resolving the issue.

After that I had to do some other changes to codebase. I had import ... from 'immutable'; statement, which I removed since I don't need immutable and it was not in my package.json.

I was also using id prop with some views, which I needed to rename, since RN was throwing me an error with registering a root view with explicit id prop or something.

Hope this helps someone.

[3gcodes]

Also having this problem. Downgrading works, as suggested. But creating brand new app with latest react-native-cli gives the "Cannot find entry file..." error.

[Benouzef]

Same problem since upgrade react native 0.44 to 0.45

[florinpop17]

+1

[fbyn]

Same problem with 0.45

[cgoudouris]

+1

[ggcaponetto]

react-native start --reset-cache seems to fix only the next start. Killing the packager process and running react-native run-android leads to the same problem, again.

[pbailey]

+1

[ggcaponetto]

0.45 seems to have a whole different project structure and entry point. The docs just got updated btw. The new entry point seems to be App.js, placed on the root.

[3gcodes]

@ggcaponetto what? I don't see a new project structure. Are you saying that react-native-cli isn't generating the appropriate project structure and that could be the issue?

[hramos]

@ggcaponetto that is only the case when a new project is created using create-react-native-app. The behavior of react-native init should remain the same.

[ggcaponetto]

You are right, sorry to have brought confusion.

[sonikro]

When running react-native run-android on React-native 0.45, the packager is looking for JS files in \Project\node_modules\react-native\packager. That's why It's not finding the index.android.js file.

If I use react-native start, the packager will start looking for JS files in the correct place (\Project).

[samartha-kar23]

The fix which seem to work well is upgrading your project to the current version 0.45.
You should consider using the new upgrade tool based on Git. It makes upgrades easier by resolving most conflicts automatically.
To use it:

• Go back to the old version of React Native(If you haven't tried upgrading likewise )
  -Go to your project folder with old version of React Native
• Run "npm install -g react-native-git-upgrade"
• Run "react-native-git-upgrade"
  See https://facebook.github.io/react-native/docs/upgrading.html

PS- If you have installed additional packages like react-navigator from npm you need to reinstall them again.
now as @sonikro mentioned use react-native start and reload.

• If you are getting Application not registered error, you need to kill the old packager instance by:
  react-native start --reset-cache

[3gcodes]

@samartha-kar23 So I need to upgrade a project I just created from scratch? That's not a fix. A brand new react-native init App should work; but doesn't.

[AVBelousov]

In first console window, from project folder run:
npm start --root .
(run packager manually with right root)

In second console window, from project folder run:
react-native run-android

[hramos]

Closing as duplicate of #14246.

[rushabhmakwana-multidots]

"react-native init YourAppName" creates an application with the react native version 0.45.0 and that creates the problem.
So I create new app with the specified version of react-native via "react-native init --version="version_number" MyFirstApp" command i.e "react-native init --version="0.44.2" MyFirstApp" and that solves my problem.