Unity singelton property is null when switching scenes

Hello,

I am new to Unity and C# and for school assignment I have to make a simpel demo game. I wanted to use a singleton pattern to keep track of simple user data when switching scenes, such as character image and player lives. However, when I switch scenes, the instance property is null. I was curious why that was and I used examples I found off the internet, but i can't figure it out. I hope you can help me, thanks in advance.

Code (CSharp):

1. public class Player : MonoBehaviour
2. {
3.     private static Player playerInstance;
4.  
5.     public Image PlayerImage { get; set; }
6.  
7.     public static Player Instance { get { return playerInstance; } }
8.  
9.  
10.     private void Awake()
11.     {
12.         if (playerInstance != null && playerInstance != this)
13.         {
14.             Destroy(this);
15.         } else {
16.             playerInstance = this;
17.             DontDestroyOnLoad(gameObject);
18.         }
19.     }
20. }

The code from the first scene:

Code (CSharp):

1.     public void StartGame()
2.     {
3.         SceneHandler.LoadNextScene();
4.         Player.Instance.PlayerImage = character;
5.     }

Code from the second scene:

Code (CSharp):

1.     void Start()
2.     {
3.         Debug.Log(Player.Instance.PlayerImage); // null
4.         DisplayText();
5.  
6.     }

Edit: Sorry, I see I posted in the wrong category

 

What happens in LoadNextScene? Do you get any errors in the Console?

 

Code (CSharp):

1.     private void Awake()
2.     {
3.         if (playerInstance != null && playerInstance != this)
4.         {
5.             Destroy(this);
6.         } else {
7.             playerInstance = this;
8.             DontDestroyOnLoad(gameObject);
9.         }
10.     }

Do you have a second copy of the player in your other scene? If you do, the first check will be true, and it will destroy your player, which would lead to the error you are getting.