Execution failed for task ‘:app:checkdebugduplicateclasses’. flutter

When you encounter the error message “Execution failed for task ‘:app:checkdebugduplicateclasses'” in Flutter, it means that there are duplicate classes found during the build process.

This error usually occurs when you have conflicting dependencies or when you include libraries that have the same class names. It can also happen if you have multiple versions of the same library dependencies in your project.

To solve this issue, you can try the following steps:

1. Check your pubspec.yaml file for any duplicate dependencies. Make sure you only include the required dependencies and remove any unnecessary ones.
2. If you have conflicting dependencies, try updating them to their latest versions. You can do this by running the command flutter packages upgrade or specific to a package, flutter packages upgrade [package_name].
3. If updating the dependencies did not resolve the issue, you can try excluding the duplicate classes manually. To do this, add the following code to your app/build.gradle file:

           
             android {
               ...
               packagingOptions {
                 exclude 'META-INF/AL2.0'
                 exclude 'META-INF/LGPL2.1'
                 exclude 'META-INF/LICENSE'
                 exclude 'META-INF/NOTICE'
               }
             }
           
         

4. After applying the changes, rebuild your project and check if the error is resolved. If not, you may need to go through your dependencies’ documentation or seek support from the library authors for further assistance.

By following these steps, you should be able to resolve the “Execution failed for task ‘:app:checkdebugduplicateclasses'” error in Flutter.

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