The Console Shows an error of cannot find instance and it also doesn't continue song as scene change

Buriuddin

I have made my own game in unity3d and I wanted to have audio so I wrote a script using Brackeys Audio tutorial. I did as he showed but I got a problem. I have a Audio Manager in two scenes and I want my audio to be continued as I switch scenes. Also I want one audio to be played when Game has ended. I don't know how to fix a bug. It shows me that I don't have a instance. I think that there are some changes in the unity audio system as the video was about 2-3 years back. The codes are as follows :

The code named Audio Manager

`using UnityEngine;

using UnityEngine.Audio;

using System;

public class AudioManager : MonoBehaviour

{

   public Sound[] sounds;

   public static AudioManager instance;

   void Awake()

   {

       if (instance == null)

       {

           instance = this;

       }

       else

       {

           Destroy(this);

           return;

       }

       DontDestroyOnLoad(gameObject);

       foreach (Sound s in sounds)

       {

           s.source = gameObject.AddComponent<AudioSource>();

           s.source.clip = s.clip;

           s.source.volume = s.volume;

       }

   }

   public void Play (string player)

   {

       Sound s = Array.Find(sounds, sounds => sounds.nameOfSound == player);

       s.source.Play();

   }

   private void Start()

   {

       Play("MemoriesMainTheme");

   }

}`

Now this is the script of which is named Sound

`using UnityEngine;

using UnityEngine.Audio;

[System.Serializable]

public class Sound

{

   public string nameOfSound;

   public bool loop;

   public AudioClip clip;

   [Range(0f,2f)]

   public float volume;

   [HideInInspector]public AudioSource source;

}`

Please help me if anyone knows how to solve it. I am new to using Unity and this is my first game with alot of problems. Please Please help me