Question by onuregeunaldi1 · Feb 27, 2020 at 09:18 PM · c#unity 5 nullreferenceexception

While level restarted I get NullReferenceException

Hello, all my problem is while the game is over and start again because of my scoreboard I get the error I pass score values between two scripts. I can not fix it thanks for all

CLASS 1

 public class GameOver : MonoBehaviour
 {
     private int score = 0;
     private ScoreBoard scoreBoard;
         
     void Awake()
     {
         scoreBoard = GameObject.FindObjectOfType<ScoreBoard>();    
     }
 
     void OnCollisionEnter2D(Collision2D collision)
     {
         if (collision.gameObject.tag == "Pipe")
         {
             print("Game is over.");
             Invoke("RestartLevel", 1.0f);
 
         }
 
     }
     void RestartLevel()
     {
         score = 0;
         SceneManager.LoadScene(0);
     }
     void OnTriggerEnter2D(Collider2D collision)
     {
         if (collision.gameObject.tag == "ScoreUp")
         {
             print("Score Up");
             score = score + 1;
             scoreBoard.UpdateScore(score);
             
         }
     }
 }

CLASS 2

 public class ScoreBoard : MonoBehaviour
 {
 
     public Text scoreText;
     
     public void UpdateScore(int score)
     {
         scoreText.text =  "Score: " + score.ToString();
     }
 }

Here is the error that I take: