Unable to remove phonegap-plugin-push

Whenever I run ionic plugin remove phonegap-plugin-push
It returns
Uninstalling phonegap-plugin-push from android
Uninstalling phonegap-plugin-push from ios
Error: Cannot read property 'buffer' of undefined
How can I resolve this? Its not letting me uninstall it, and it breaks the build.
FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':preDexArmv7Debug'.

  java.lang.IllegalArgumentException: Source /home/damian/Dropbox/ultimateguide-app1/platforms/android/build/intermediates/pre-dexed/armv7/debug/classes-b5c185c241b23fb846944cf73b4169f91064b336.jar and destination /home/damian/Dropbox/ultimateguide-app1/platforms/android/build/intermediates/pre-dexed/armv7/debug/classes-b5c185c241b23fb846944cf73b4169f91064b336.jar must be different

Thanks.