Flutter – "Upload symbol failed" while archiving and uploading a build through Xcode

You can try these methods to fix this issue

1. Ensure dSYM files are generated correctly

Open your project in Xcode.
Go to your Build Settings tab.
Search for "Debug Information Format" under the Build Settings.
Ensure that the value for both Debug and Release is set to DWARF with dSYM File.

2. Verify Build Configuration

Make sure that in Scheme -> Archive settings, the build configuration is set to Release.
Go to Product -> Scheme -> Manage Schemes, and ensure the Build Configuration for Archive is set to Release.

3. Rebuild the Project

After ensuring the above settings are correct:

Clean the project in Xcode by clicking Product -> Clean Build Folder.
Then, rebuild the project by clicking Product -> Build.
Archive the project again and check if the error persists.

4. Verify that dSYMs are included in the Archive

After archiving the app, go to Window -> Organizer in Xcode, select the archive you created, and click Show in Finder.
In Finder, right-click the archive and choose Show Package Contents.
Go to dSYMs folder and verify that the Flutter.framework.dSYM is present.

5. Check Flutter Frameworks
If the issue still persists, ensure you are packaging your Flutter app correctly:

Run the following command in the terminal in your project folder:

flutter clean
flutter build ios --release

This will clean and rebuild your Flutter iOS app, regenerating the necessary files, including dSYM files.

After following these steps, attempt to archive and upload again. Let me know if you encounter further issues!