Xamarin iOS Crash on Android - android

We are use Xamarin forms local notifications on our app. with the below line in the code it causes the app the crash
UNUserNotificationCenter.Current.RemovePendingNotificationRequests(requests);
even tho the line should only be run on iOS devices. this is done with the following;
`
if (Device.RuntimePlatform == "Android")
{
}
else
{
UNUserNotificationCenter.Current.RemovePendingNotificationRequests(requests);
}
`
the below error is given with the UNUserNotificationsCenter in the code
System.IO.FileNotFoundException: Could not load file or assembly 'Xamarin.iOS, Version=0.0.0.0, Culture=neutral, PublicKeyToken=84e04ff9cfb79065' or one of its dependencies.
anyone any ideas??
We have tried completely reimplementing the local notifications, clean and clearing bin/obj. updated both machine and vs to the latest version, updated frameworks.
built on VS Mac 2022 17.3.6
android framework 13.0.0.0

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