Eror 1061 what to do?

Question

Unity

using UnityEngine;

public class ExplodeCubes : MonoBehaviour {
    
    private bool _collisionSet;
    
    private void OnCollisionEnter(Collision collision) {
        if(collision.gameObject.tag == "Cube" && !_collisionSet) {
            for(int i = collision.transform.childCound - 1; i >= 0; i--) {
                Transform child = collision.transform.GetChild(i);
                child.gameObject.AddComponent<Rigidbody>();
                child.gameObject.GetComponent<Rigidbody>().AddExplosionForce(70f, Vector3.up, 5f);
                child.SetParent(null);
            }
            Destroy(collision.game0bject);
            _collisionSet = true;
        }
    }

  }

Answer 1

As in childhood they joked "What to do? Fart and run."
Look for a bug that! Even without specifying the line 0 is not visible, and the unit also writes the exact line to you. And IDE also directly underlines the wrong word.