NullReferenceException: Object reference not set to an instance of an object test.OnCollisionEnter (UnityEngine.Collision col) (at Assets/test.cs:81)

Question

В общем, я хочу, чтобы когда мой игрок касался кое какого объекта, то на экран выводил You Win. Так вот, You Lose, HP и Score отлично работают, но, когда приходит момент, когда экран должен написать You Win выводит эту ошибку "NullReferenceException: Object reference not set to an instance of an object test.OnCollisionEnter (UnityEngine.Collision col) (at Assets/test.cs:81) " Вот весь код.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class test : MonoBehaviour
{
public int HP;
public int Score;
public float Fall;
public Text HP_text;
public Text Score_text;
public Text YouLose_text;
public Text Win_text;
void Start()
{
    HP = 100;
    Score = 0;
HP_text = GameObject.FindWithTag("HP").GetComponent<Text>();
Score_text = GameObject.FindWithTag("Score").GetComponent<Text>();
YouLose_text = GameObject.FindWithTag("YouLose").GetComponent<Text>();
Win_text = GameObject.FindWithTag("Win").GetComponent<Text>();

}
void Update()
{
    HP_text.text = "HP:" + HP;
    Score_text.text = "Score:" + Score;
if (HP > 100)
{
    HP = 100;
}

if (HP < 0)
{
    HP = 0;
}

if (HP <= 0)
{
    YouLose_text.text = "You Lose";
}

Vector3 Checkpoint = new Vector3 (0,2,0);
GameObject Player = GameObject.FindGameObjectWithTag("Player");
Fall = GameObject.FindGameObjectWithTag("Player").transform.position.y;
if (Fall<-4) 
{
    HP -= 10;
    Player.transform.position = Checkpoint;
}


}
private void OnTriggerEnter(Collider other)
{
    if (other.tag == "Coin")
    {
        Score += 1;
        Destroy(other.gameObject);
    }
    if (other.tag == "MedKit")
    {
        HP += 10;
        Destroy(other.gameObject);
    }
}
private void OnCollisionEnter(Collision col)
{
    if (col.gameObject.tag == "You Lose")
    {
        YouLose_text.text = "You Lose";
    }
    if (col.gameObject.tag == "Win")
    {
        Win_text.text = "You Win";
    }
}
}