How to Resolve the Flutter Execution failed for task ':app:checkDebugDuplicateClasses' Error?

Learn how to fix the common `Flutter Execution failed for task ':app:checkDebugDuplicateClasses'` error in Android development. Follow these steps to troubleshoot your Flutter, Dart, and Gradle setup.
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How to Resolve the Flutter Execution failed for task ':app:checkDebugDuplicateClasses' Error?

As a Flutter developer, you might encounter several build-related issues during the development of your application. One such common error is the Flutter Execution failed for task ':app:checkDebugDuplicateClasses'. This article discusses how to resolve this error effectively.

Understanding the Error

This error occurs due to multiple classes with the same name being included in your app. Flutter utilizes Gradle for build management, and this error is Gradle catching the class duplication issue at build time. This typically happens when multiple dependencies include the same class files.

Steps to Resolve the Error

Identify Duplicate Classes

Start by checking the build output for details about the conflicting classes. This will give you a hint about which dependencies are causing the conflict.

For instance, if you have:

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You need to ensure that some_package and another_package don't include the same classes.

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Update Dependencies

Ensure all your dependencies are up to date. Sometimes, conflicts arise due to outdated versions of libraries. Run the following command to update dependencies in Flutter:

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Clean and Rebuild

After making the necessary changes, clean and rebuild the project to ensure the changes take effect. Use the following commands:

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Conclusion

By following these steps, you can efficiently tackle the class duplication errors and ensure a stable build process for your Flutter project.