Null Reference Exeption game pausing

my game pauses and the error log says
NullReferenceException: Object reference not set to an instance of an object
AreaExit.Start () (at Assets/Scripts/AreaExit.cs:36)

then when I double click it it brings me to

I highlighted the part that it highlights

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEngine.SceneManagement;





public class AreaExit : MonoBehaviour

{





public string areaToLoad;

public string areaTransitionName;

public AreaEntrance theEntrance;




// Start is called before the first frame update

void Start()

{

theEntrance.transitionName = areaTransitionName;

}



// Update is called once per frame

void Update()

{



}



private void OnTriggerEnter2D(Collider2D other)
{
if (other.tag == "Player")
{

Debug.Log("Collisiondetected,TryingtoLoad");

SceneManager.LoadScene(areaToLoad);

PlayerController.instance.areaTransitionName = areaTransitionName;
}

}

}

 

the errors says that theEntrance is not set, which would mean check your editor parameters that you have set the variable

 

I am sorry but I am noob so i dont understand

 

In the unity editor (where you place your objects on the scene etc), find the AreaExit script in your scene (you should know where you put it), and in the Object Inspector (usually on the far right, tells you properties of components) you will see all your public parameters for the script, such as areaToLoad, areaTransitionName and theEntrance. Make sure that theEntrance is set to something (not None/Null),