Null Reference for Spawning Character

I cant figure out whats wrong with this code I keep getting a null reference exception error but my player is referenced correctly maybe y'all can find what is wrong with this code.And he is dropped inside the component used to instantiate it.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class PlayerSpawner : MonoBehaviour {
 
     public enum SpawnState { Spawning, Waiting, Counting };
 
     [System.Serializable]
     public class Wave
     {
         public string name;
       
         public int count;
         public float rate;
     }
     private healthBar health;
     public Wave[] waves;
     private int nextWave = 0;
     public int Recorder = 0;
     public float timeBetweenWaves = 5f;
     public float waveCountdown;
     private float searchCountdown = 1f;
     public GameObject[] spawnPoints;
     public GameObject enemy;
     public SpawnState state = SpawnState.Counting;
 
     void Awake()
     {
         waveCountdown = timeBetweenWaves;
         health = FindObjectOfType<healthBar>();
     }
 
     // Use this for initialization
     void Start()
     {
 
 
     }
 
     // Update is called once per frame
     void Update()
     {
         if (state == SpawnState.Waiting)
         {
             if (!EnemyIsAlive())
             {
                 WaveCompleted();
             }
             else
             {
                 return;
             }
         }
 
 
         if (waveCountdown <= 0)
         {
             if (state != SpawnState.Spawning && !GameObject.FindGameObjectWithTag("Player").activeInHierarchy)
             {
 
                 
                    StartCoroutine(SpawnWave(waves[nextWave]));
                 
                
             }
         }
         else
         {
             waveCountdown -= Time.deltaTime;
         }
     }
 
     bool EnemyIsAlive()
     {
         searchCountdown -= Time.deltaTime;
         if (searchCountdown <= 0f)
         {
             searchCountdown = 1f;
 
             if (GameObject.FindGameObjectWithTag("Player") == null)
             {
                 return false;
             }
         }
 
         return true;
     }
 
     void WaveCompleted()
     {
         state = SpawnState.Counting;
         waveCountdown = timeBetweenWaves;
 
         if (nextWave + 1 > waves.Length - 1)
         {
             nextWave = 0;
             print("All waves Complete");
 
         }
 
         
 
         else
         {
             nextWave++;
         }
 
     }
 
 
 
     IEnumerator SpawnWave(Wave _wave)
     {
 
         state = SpawnState.Spawning;
         for (int i = 0; i < _wave.count; i++)
         {
             SpawnEnemy();
             Recorder= _wave.count;
             yield return new WaitForSeconds(1f / _wave.rate);
         }
 
         if(_wave.count == 3)
         {
             _wave.count = 1;
         }
         state = SpawnState.Waiting;
 
         yield break;
 
     }
 
     void SpawnEnemy()
     {
       
 
       
 
         //GameObject _sp = spawnPoints[Random.Range(0, spawnPoints.Length)];
         Instantiate(enemy, transform.position, transform.rotation);
         //Instantiate(Resources.Load("US_Ranger"), transform.position, transform.rotation);
     }
 }

This is where the error starts.