15:51초에 나오는

gamemanager.i.addscore(score);

를 적고 저장하고 유니티 화면으로 넘어갔더니 오류가 발생했습니다.

작성한 코드 및 에러 메세지

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

public class rain : MonoBehaviour

{

  int type;

  float size;

  int score;

  // Start is called before the first frame update

  void Start()

  {

    float x = Random.Range(-2.7f, 2.7f);

    float y = Random.Range(3f, 5f);

    transform.position = new Vector3(x, y, 0);

    type = Random.Range(1, 4);

    if(type == 1)

    {

      size = 1.2f;

      score = 3;

      GetComponent<SpriteRenderer>().color = new Color(100 / 255f, 100 / 255f, 255 / 255f, 255 / 255f);

    }

    else if (type == 2)

    {

      size = 1.0f;

      score = 2;

      GetComponent<SpriteRenderer>().color = new Color(130 / 255f, 130 / 255f, 255 / 255f, 255 / 255f);

    }

    else

    {

      size = 0.8f;

      score = 1;

      GetComponent<SpriteRenderer>().color = new Color(150 / 255f, 150 / 255f, 255 / 255f, 255 / 255f);

    }

    transform.localScale = new Vector3(size, size, 0);

  }

  // Update is called once per frame

  void Update()

  {

  }

  void OnCollisionEnter2D(Collision2D coll)

  {

    if (coll.gameObject.tag == "ground")

    {

      Destroy(gameObject);

    }

    if(coll.gameObject.tag == "rtan")

    {

      Destroy(gameObject);

      GameManager.I.addScore(score);

    }   

  }

}