Can someone tell me what is wrong with this script?

Questions & Answers
1

I got this this script for the RPG tutorial series from HardlyBrief Programming in the Serialization episode.
Here’s the script:

using UnityEngine;
using System;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;

public class PPSerialization {

    public static BinaryFormatter binaryFormatter = new BinaryFormatter();

	public static void Save(string saveTag, object obj)
    {
        MemoryStream memoryStream = new MemoryStream();
        binaryFormatter.Serialize(memoryStream, obj);
        string temp = System.Convert.ToBase64String(memoryStream.ToArray());
        PlayerPrefs.SetString(saveTag, temp);
    }

    public static void Load(string saveTag)
    {
        string temp = PlayerPrefs.GetString(saveTag);
        if(temp == string.Empty)
        {
            return null;
        }
        MemoryStream memoryStream = new MemoryStream(System.Convert.FromBase64String(temp));
        return binaryFormatter.Deserialize(memoryStream);
    }

Visual Studio marks the “return null” and “return binaryFormatter.Deserialize(memoryStream)”.

2

change public static void Load(string saveTag) to public static object Load(string saveTag)