Getting Object reference not set even though it is

SUMMARY OF THE ISSUE
I have a Game Object and attached to that is a script called "GameSession"

When I run the game, the game works fine. When the player loses all 3 lives, the game goes to the next scene which is the "End Credits" scene, where the player's final score is displayed and there is a "Play Again" button.

When I click the "Play Again" button, I go back to the original scene, and now I get the errors.

When the player dies this code is executed:

Code (CSharp):

1.         if (numberOfLives <= 0)
2.         {
3.           SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex + 1);
4.  
5. }

So far, pretty straight forward. I move to the next scene.

On the next scene I have a game object with a script attached that has the following code:

Code (CSharp):

1. public class EndCredits : MonoBehaviour
2. {
3.     private GameSession gamePlay;
4.     [SerializeField] TextMeshProUGUI playerScoreText;
5.  
6.     // Start is called before the first frame update
7.     void Start()
8.     {
9.         gamePlay = FindObjectOfType<GameSession>();
10.         playerScoreText.text = "YOUR SCORE: " + gamePlay.playerScore.ToString() + Environment.NewLine + "YOUR LEVEL: " + gamePlay.playerLevel.ToString();
11.         Destroy(gamePlay);
12.     }
13.  
14. }

Again pretty straight forward. I don't destroy the previous game session until I get the values I need to display to the user. Once I set the text, I destroy the game session.

The "Play Again" button runs this code when it is clicked:

Code (CSharp):

1.     public void LoadMainMenu()
2.     {
3.         SceneManager.LoadScene(0);
4.     }

Again pretty straight forward.

The error occurs in the player script when on these lines:

Code (CSharp):

1.     private void OnTriggerEnter2D(Collider2D collision)
2.     {
3.         if (collision.tag == "Right Shredder")
4.         {
5.             //show finish line bob
6.             gameSession.GetComponent<GameSession>().ShowFinishLineBob();
7.         }
8.         else
9.         {
10.             gameSession.GetComponent<GameSession>().ProcessPlayerDeath();          
11.         }
12.        
13.     }

Specifically on the "gameSession" which is initialized in the start method of this script as follows:

Code (CSharp):

1.         gameSession = GameObject.Find("GameSession");

What's weird, is, this code works fine when you run the game. It only breaks when you try to start a new game via the "Play Again" button.

Hope this helps. If you need any further info, let me know.

 

Ok I found my issue. I wanted to post it in case anyone else had the same. I changed the "OnTrigger2d" code to this:

Code (CSharp):

1.     private void OnTriggerEnter2D(Collider2D collision)
2.     {
3.         if (collision.tag == "Right Shredder")
4.         {
5.             FindObjectOfType<GameSession>().ShowFinishLineBob();
6.         }
7.         else
8.         {
9.             FindObjectOfType<GameSession>().ProcessPlayerDeath();
10.  
11.         }
12.        
13.     }

This works for me.