How do I use Quasar rat?

What's wrong with this code? I just don't understand it. using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.SceneManagement; public class SwitchScene : MonoBehaviour { public Scene scene; void OnTriggerEnter(Collider other) { if (other.tag == "Player") { SceneManager.LoadScene(scene); } } }