NullReferenceException (really confused here.)

NullReferenceException: Object reference not set to an instance of an object CursorControl.Update () (at Assets/Scripts/CursorControl.cs:42)

I have been looking at this for the past few days and I can't seem to find out whats wrong. I don't even know if its this script that's the problem at this point but I looked at the others and they seem ok too.

     using UnityEngine;
     using System.Collections;
     
     public class CursorControl : MonoBehaviour {
             
         private GameObject multiplayerManager;    
         private MultiplayerScript multiScript;    
         private GameObject gameManager;    
         private CommunicationWindow commScript;    
         private ScoreTable scoreScript;
         private GameSettings settingsScript;
     
         void Start(){
             if(networkView.isMine == true){
                 multiplayerManager = GameObject.Find("MultiplayerManager");            
                 multiScript = multiplayerManager.GetComponent<MultiplayerScript>();            
                 gameManager = GameObject.Find("GameManager");            
                 commScript = gameManager.GetComponent<CommunicationWindow>();            
                 scoreScript = gameManager.GetComponent<ScoreTable>();
                 settingsScript = gameManager.GetComponent<GameSettings>();
             }        
             else{
                 enabled = false;
             }
         }
     
         void Update(){
             if(multiScript.showDisconnectWindow  == false && 
                 commScript.unlockCursor             == false &&
                 scoreScript.blueTeamHasWon         == false &&
                 scoreScript.redTeamHasWon         == false &&
                 settingsScript.showSettings      == false){
                 Screen.lockCursor = true;
             }
             
             if(multiScript.showDisconnectWindow     == true || 
                  commScript.unlockCursor          == true ||
                 scoreScript.blueTeamHasWon         == true ||
                 scoreScript.redTeamHasWon          == true ||
                 settingsScript.showSettings      == true){
                 Screen.lockCursor = false;
             }
         }
     }