ionic has tons of issue of compatibility issue, just ran into another one where running ionic app in ios emulator, the input field cannot be focused. the solution is to simulator -> “Hardware” -> “Keyboard” -> “Toggle software keyboard”
The issue article can be found here: Issue 12849 Basically it is one of the plugin supplying some class file which is included in the latest cordova platform libraries, therefore triggered duplicate error: so basically the latest cordova platform 4.5 or higher has conflict with the cordovar plugin: cordova-plugin-console removing plugin solve the issue.