Flutter APK not build in Mac m2 “font-subset” can’t be opened because Apple cannot check it for malicious software

“font-subset” can’t be opened because Apple cannot check it for malicious software.

Building without sound null safety ⚠️
Dart 3 will only support sound null safety, see https://dart.dev/null-safety

Running Gradle task 'assembleRelease'...

Target aot_android_asset_bundle failed: IconTreeShakerException: Font subsetting failed with exit code -9.

To disable icon tree shaking, pass --no-tree-shake-icons to the requested flutter build command

FAILURE: Build failed with an exception.

The IconTreeShakerException: Font subsetting failed with exit code -9 error typically indicates that the Flutter tree_shake_icons setting is enabled, but it encountered an issue while trying to remove unused icons from your app's package to reduce the size of the app.

While flutter build ipa --no-tree-shake-icons works, it might impact the size of your app.

What you can do is:

• Go to system preferences > Privacy and Security
• Scroll down a bit.

You should see this:

Press allow anyway, you might have to build again.

When you get the pop-up, select Show in Finder:

Then right-click the file and select open (source):

Confirm that you want to open the file and it will be added as an exception to your mac.

Try using the commands below:

IOS:

flutter build ipa --no-tree-shake-icons

Android:

flutter build appbundle --no-tree-shake-icons

You'll need to tell your Mac that you are happy to use this code that hasn't been notarised with Apple. To do this:

1. Open up Mac's System Settings
2. Navigate to Privacy and Security
3. Scroll down until you see a section titled 'Security'
4. If you've just attempted to build an app bundle, you'll see a font-subset section with a button to 'allow anyway'. Tap this and then attempt to rebuild your app bundle - it should work.