Error while compiling Friends: 'HiddenValue<ListDictionary<NetworkableId, BaseNetworkable>>' does not contain a definition for 'Where' and no accessible extension method 'Where' accepting a first argument of type 'HiddenValue<ListDictionary<NetworkableId, BaseNetworkable>>' could be found (are you missing a using directive or an assembly reference?) | Line: 1119, Pos: 87
