2D Roguelike part 5 - Code or script issue "Are you missing 'Complete' using directive"

Hello I was wandering if someone could help as I'm stuck. I'm following the Roguelike tutorial and now I'm stuck using the GameManager script.

I get this error

"Assets/Scripts/GameManger.cs(10,10): error CS0246: The type or namespace name BoardManager2' could not be found. Are you missing Completed' using directive?"

I'm not sure what it means as before it basically said I needed a bracket.

 using UnityEngine;
 using System.Collections;
 
 using System.Collections.Generic;       //Allows us to use Lists. 
 
 public class GameManager : MonoBehaviour
 {
 
     public static GameManager instance = null;              //Static instance of GameManager which allows it to be accessed by any other script.
     private BoardManager2 boardScript;                       //Store a reference to our BoardManager which will set up the level.
     private int level = 3;                                  //Current level number, expressed in game as "Day 1".
 
     //Awake is always called before any Start functions
     void Awake()
     {
         //Check if instance already exists
         if (instance == null)
 
             //if not, set instance to this
             instance = this;
 
         //If instance already exists and it's not this:
         else if (instance != this)
 
             //Then destroy this. This enforces our singleton pattern, meaning there can only ever be one instance of a GameManager.
             Destroy(gameObject);    
 
         //Sets this to not be destroyed when reloading scene
         DontDestroyOnLoad(gameObject);
 
         //Get a component reference to the attached BoardManager script
         boardScript = GetComponent<BoardManager>();
 
         //Call the InitGame function to initialize the first level 
         InitGame();
     }
 
     //Initializes the game for each level.
     void InitGame()
     {
         //Call the SetupScene function of the BoardManager script, pass it current level number.
         boardScript.SetupScene(level);
 
     }
 
 
 
     //Update is called every frame.
     void Update()
     {
 
     }
 }

Any help would be appreciated.

Regards,