[part 5]NullReferenceException: Object reference not set to an instance of an ob

[Haydn V]

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there is an error that happens when my player touches the scene transition in makes the player not enter the next scene
the error points out the NullReferenceException: Object reference not set to an instance of an object
SceneTransition.OnTriggerEnter2D (UnityEngine.Collider2D _other) (at Assets/scripts/SceneTransition.cs:37)

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class SceneTransition : MonoBehaviour
{

    [SerializeField] private string transitionTo;

    [SerializeField] private Transform startPoint;

    [SerializeField] private Vector2 exitDirection;

    [SerializeField] private float exitTime;

    private void Start()
    {
        if(transitionTo == GameManager.instance.transitionFromScene)
        {
            PlayerController.instance.transform.position = startPoint.position;

            StartCoroutine(PlayerController.instance.WalkIntoNewScnene(exitDirection, exitTime));
        }
        StartCoroutine(UiManager.instance.sceneFader.fade(ScreenFader.fadeDirection.Out));

    }

    private void OnTriggerEnter2D(Collider2D _other)
    {
        if (_other.CompareTag("Player"))
        {
            GameManager.instance.transitionFromScene = SceneManager.GetActiveScene().name;

            PlayerController.instance.pState.transition = true;

            StartCoroutine(UiManager.instance.sceneFader.FadeAndLoadScene(ScreenFader.fadeDirection.In, transitionTo));

        }
    }
}

[Haydn V]

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[Terence]

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Hi Haydn,

The error should be here:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class SceneTransition : MonoBehaviour
{

    [SerializeField] private string transitionTo;

    [SerializeField] private Transform startPoint;

    [SerializeField] private Vector2 exitDirection;

    [SerializeField] private float exitTime;

    private void Start()
    {
        if(transitionTo == GameManager.instance.transitionFromScene)
        {
            PlayerController.instance.transform.position = startPoint.position;

            StartCoroutine(PlayerController.instance.WalkIntoNewScnene(exitDirection, exitTime));
        }
        StartCoroutine(UiManager.instance.sceneFader.fade(ScreenFader.fadeDirection.Out));

    }

    private void OnTriggerEnter2D(Collider2D _other)
    {
        if (_other.CompareTag("Player"))
        {
            GameManager.instance.transitionFromScene = SceneManager.GetActiveScene().name;

            PlayerController.instance.pState.transition = true;

            StartCoroutine(UiManager.instance.sceneFader.FadeAndLoadScene(ScreenFader.fadeDirection.In, transitionTo));
            Debug.Log(UiManager.instance);
            Debug.Log(UiManager.instance.sceneFader);
        }
    }
}

Can you put the lines highlighted in green above and show me the Console output? And show me your Inspector for the UIManager as well.

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