After upgrading to android 12, the application won't compile. The error displayed in the Merged manifest is related to android:exported attribute which needs to be explicitly specified for components that have an intent filter defined. To fix this issue, you need to set the android:exported attribute to false for all the activities in your manifest file.

Here's an example of how to set the android:exported attribute:

Once you have set the android:exported attribute for all the activities in your manifest file, you should be able to compile your application without any errors.