Ember App Not Working – How to Fix?

How to Fix Ember App Not Working?

How to Fix Ember App Not Working? Ember, the popular JavaScript framework for building ambitious web applications, is known for its robust architecture and efficient development workflow. But even the most seasoned Ember developers can encounter occasional hiccups that leave their apps inoperable.

If your Ember app isn’t working as expected, fear not! This article will guide you through troubleshooting common issues and finding solutions to get back on track.

Identifying the Ember App Not Working Problem:

The first step is accurately identifying the issue. This may involve:

  • Error messages: Look for any error messages displayed in the browser console or development tools. These can provide valuable clues about the source of the problem.
  • Unexpected behavior: Is the app behaving unexpectedly? Is it slow, unresponsive, or displaying incorrect information? Describe the problem in detail to help isolate the cause.
  • Recent changes: Did you recently make any changes to your codebase? These changes could be related to the issue.

Common Issues and How to Resolve Ember App Not Working:

Here are some common Ember app problems and potential solutions:

1. Build Errors:

  • Ember-CLI version mismatch: Ensure you use the correct Ember-CLI version for your project.
  • Missing dependencies: Install any missing dependencies using ember install.
  • Syntax errors: Review your code for any typos or syntax errors.

2. App not Rendering:

  • Empty templates: Ensure your templates have the appropriate content and are properly referenced in your routes.
  • Missing components: Verify that all referenced components are defined and properly imported.
  • Data fetching issues: Check if your data models are correctly configured, and data fetching methods are implemented.

3. JavaScript Errors:

  • Uncaught exceptions: Use the browser’s debugger to identify the source of the uncaught exception and fix the underlying code.
  • Module resolution errors: Ensure all modules are properly imported and exported in your code.
  • Circular dependencies: Break any circular dependencies in your code to avoid runtime errors.

4. Ember Data Issues:

  • Incorrect model definitions: Verify your model definitions are accurate and reflect your data structure.
  • Missing adapters: Ensure the appropriate adapter is configured for your data source.
  • Network errors: Check your internet connection and confirm the accessible data source.

5. App Performance:

  • Large bundles: Use techniques like code splitting and lazy loading to reduce bundle size and improve performance.
  • Inefficient algorithms: Analyze your code for performance bottlenecks and optimize algorithms accordingly.
  • Excessive data fetching: Minimize unnecessary data fetching to reduce network traffic and improve responsiveness.

Additional Resources:

Here are some additional resources that can help you troubleshoot Ember app issues:

Q: My Ember app works fine on the web but not on my mobile device (Android or iPhone). What could be the problem?

There are several potential reasons:
Compatibility issues: Your Ember app might use features or libraries incompatible with mobile browsers.

JavaScript errors: There could be errors in your JavaScript code that only manifest on mobile devices.

Network issues: The app might be trying to access resources unavailable on mobile networks, or the network connection might be unstable.

Device limitations: Some mobile devices might have limitations that prevent the app from working properly.

Q: What are some common fixes for Ember apps not working on mobile devices?

Here are some common solutions:
Use polyfills: Polyfills are pieces of code that can provide missing functionality in mobile browsers.

Use a mobile-specific build process: Ember-CLI offers a mobile build process to optimize your app for mobile devices.

Minimize external dependencies: The more external dependencies your app has, the more likely it is to encounter compatibility issues on mobile devices.

Use a service worker: A service worker can help you cache resources offline and improve your app’s performance on mobile devices.


By systematically identifying the problem, understanding Ember App Not Working issues, and utilizing available resources, you can effectively troubleshoot and resolve most Ember app problems. Remember, the Ember community is vast and supportive, so don’t hesitate to seek help if you encounter any difficulties. With persistence and the right approach, your Ember app will be up and running quickly.

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