Push register() function throwing "no valid aps-environment entitlement string..." error

I am running Ionic 2.1.0, Cordova 6.4, Phonegap Plugin Push 1.8.0. When I do an Ionic Package build and load the app on my iOS device and execute the register() function I am receiving the error: no valid aps-environment entitlement string found for application

Any thoughts on resolving this issue? Appears that opening in Xcode and enabling the Push Notifications setting should resolve it, but we use Ionic Package. Also, I am not in a position to upgrade Ionic or Cordova to get a newer version of the Phonegap Plugin Push.

Any thoughts on resolving the ‘aps-environment’ issue?

Version 1.9.0 appears to have fixed the problem.