Common.js:267 Native: tried calling OneSignal.getIds, but the OneSignal plugin is not installed

I am getting OneSignal plugin errors, even after using the solution suggested(In Ionic tried calling OneSignal.startInit, but the OneSignal plugin is not installed - #17 by MatheusEli) from this thread, I am STILL getting the errors below in my console
Error: exec proxy not found for :: OneSignalPush :: getIds
Error: exec proxy not found for :: OneSignalPush :: setSubscription
Error: exec proxy not found for :: OneSignalPush :: setNotificationReceivedHandler
Error: exec proxy not found for :: OneSignalPush :: setNotificationOpenedHandler
Error: exec proxy not found for :: OneSignalPush :: setInAppMessageClickHandler
Error: exec proxy not found for :: OneSignalPush :: init

i am still having the same issue here!