Problem when upgrading to sdk 30

Hi !

I want to update my Capacitor V2 - ionic V3 project from targetSdkVersion 29 to targetSdkVersion 30.

The problem is that when I update my variables.gradle, the application stops working properly. For example, I can’t see any text in my app and it takes a long time to open.

I changed select the sdk 30 in Android Studio. If a returned to targetSdkVersion 29, all works well.

Any idea ? Thank you very much.