Java.Lang.ClassNotFoundException for ConnectivityManager.NetworkCallback

HelloWorldThere

Hello, as I was trying to implement the callback method for ConnectivityManager.NetworkCallback,#OnAvailable(Network network), this error was thrown.

03-13 10:45:19.507 I/MonoDroid(24579): UNHANDLED EXCEPTION:
03-13 10:45:19.559 I/MonoDroid(24579): Java.Lang.ClassNotFoundException: Didn't find class "md5f12606060c136c5b726e7aaee51e9e82.MyClass_NetworkCallback" on path: DexPathList[[zip file "/data/app/...../base.apk

Anyone has faced this issue in the past?

HelloWorldThere

PS:
Xamarin version 4.8.0.756
Xamarin.Android version 8.1.0.13