MongoDB.Bson.BsonSerializationException Issue with Xamarin App


I am having an app issue when trying to put items into the MongoDB database.
I get the following error:
This is when putting map pin data into the database.

MongoDB.Bson.BsonSerializationException: ‘The property ‘Dispatcher’ of type ‘Xamarin.Forms.Maps.Pin’ cannot use element name ‘Dispatcher’ because it is already being used by property ‘Dispatcher’ of type ‘Xamarin.Forms.BindableObject’.’