Error NullReferenceException: Object reference not set to an instance of an object

so i have this script

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class bomb_checker : MonoBehaviour
{
    public bool nearbomb;
    public void OnCollisionEnter(Collision other)
    {
        if(other.gameObject.CompareTag("Bomb"))
        {
            nearbomb = true;
        }
    }

    public void OnCollisionExit(Collision other)
    {
            if (other.gameObject.CompareTag("Bomb"))
            {
                nearbomb = false;
            }
    }

}

and i am trying to refrence nearbomb in this script

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class cam_switch : MonoBehaviour
{
    public GameObject Player;
    public GameObject BombCam;
    bomb_checker Bomb;
    void Start()
    {
        Player.SetActive(true);
        BombCam.SetActive(false);
        Bomb = GameObject.Find("nearbomb").GetComponent<bomb_checker>();
    }

    void Update()
    {


        if(Input.GetKeyDown(KeyCode.E) && Bomb.nearbomb == true)
        {
            Player.SetActive(false);
            BombCam.SetActive(true);
        }

        if (Input.GetButtonDown("Fire2"))
        {
            Player.SetActive(true);
            BombCam.SetActive(false);
        }
    }
}

but when i do this is giving me the error NullReferenceException: Object reference not set to an instance of an object not sure what i did wrong

First, thank you for using code tags!

If you look at your error message, it also includes some extra info at the end. Namely, a filename and a few numbers in parentheses. This is crucial information, as it tells you the source code file that the error is happening in and the exact line number where the error is happening. Would you mind sharing that information?