I made the first version in Mac, I sold my Mac and when I compile with my new pc, I can’t install the application on Android because An existing package by the same name with a conflicting signature is already installed.
I checked that all versions are the same.
I deleted node_modules folder and run npm install. I run ionic platform rm android and ionic platform add android.
I coped the debug.keystore from the Mac on my pc in /.android.
I coped the debug.keystore to platofrm/android and made debug-signing.properties.
The app is in debug, because is for internal company use.