No bundle url present
Problem
Description I noticed some people recently asking about this "No bundle url present" error and I just faced it myself. Reproduction I had just run ˜react-native init projectName˜, setup my App.js file (a simple Hello World), called it in both iOS and Android indexes and run ˜react-native run-ios˜. Then the No bundle url present error appeared. Solution I tried to delete my node_modules and npm install, close the packager and run the project again, but it could only be solved when I follow the steps given here (http://stackoverflow.com/questions/42610070/what-means-of-no-bundle-url-present-in-react-native). Run "react-native run-ios" When the error appears, run "npm install" * Then run "react-native run-ios" again. Additional Information This is the first project I started using RN 0.42. Since it never happened before and I am not the only one facing this issue, I guess it should be taken a closer look to it. Here's my package.json: [code block] If I can be more helpful to make any further test, it would be a pleasure.
Error Output
error and I just faced it myself.
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1 Fix
Resolve 'No Bundle URL Present' Error in React Native
The 'No bundle URL present' error typically occurs when the React Native packager is not running or the app cannot connect to the packager. This can happen due to various reasons such as improper initialization of the project, issues with the Metro bundler, or network configuration problems.
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- 1
Initialize React Native Project
Ensure you have initialized your React Native project correctly using the command 'react-native init projectName'. This sets up the necessary files and configurations.
bashreact-native init projectName - 2
Start Metro Bundler
Before running your app, make sure the Metro bundler is running. Open a terminal and navigate to your project directory, then run the command to start the bundler.
bashnpx react-native start - 3
Run iOS Application
In a new terminal window, run your iOS application. This will attempt to connect to the Metro bundler that you started in the previous step.
bashnpx react-native run-ios - 4
Install Dependencies
If you encounter the 'No bundle URL present' error, try reinstalling your project dependencies. In your project directory, run the following command to install any missing packages.
bashnpm install - 5
Re-run iOS Application
After installing the dependencies, run the iOS application again to check if the issue has been resolved.
bashnpx react-native run-ios
Validation
To confirm the fix worked, the application should launch successfully in the iOS simulator without displaying the 'No bundle URL present' error. You should see your Hello World app rendered correctly.
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Environment
Submitted by
Alex Chen
2450 rep