Need help with unity error...how to fix

[deep stump]

THIS IS MY WORLD ENEMY SPAWNER SCRIPT (this stores every spawner and manages enemy spawning)

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

public class WorldEnemySpawner : MonoBehaviour
{
public List<LoneEnemySpawner> spawnerQueue = new List<LoneEnemySpawner>();
public LoneEnemySpawner[] spawners;
public GameObject[] enemies;

public static WorldEnemySpawner instance;
private void Awake()
{
    if (instance == null)
        instance = this;
    else
        Destroy(gameObject);

    spawners = GetComponentsInChildren<LoneEnemySpawner>();
}

private void Start()
{
    foreach (LoneEnemySpawner spawner in spawners)
    {
        spawner.SpawnEnemy(enemies[0]);
    }
}

private void Update()
{
    List<LoneEnemySpawner> spawnerQueueCopy = new List<LoneEnemySpawner>(spawnerQueue);

    foreach (LoneEnemySpawner spawner in spawnerQueueCopy)
    {
        spawner.SpawnEnemy(enemies[0]);
        spawnerQueue.Remove(spawner); // Modify the original list
    }
}

}

THIS IS THE LONE SPAWNER SCRIPT (the actual spawners)

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

public class LoneEnemySpawner : MonoBehaviour
{

public GameObject spawnedEnemy;
public bool spawnerOccupied = true;
public bool requestedReplacement = false;

public float spawnerCooldown = 3f;
// Start is called before the first frame update

void Start()
{
    Debug.Log(transform.position);
}

// Update is called once per frame
void Update()
{
    if (spawnedEnemy == null && requestedReplacement == false)
    {
        StartCoroutine(RequestEnemyReplacement(spawnerCooldown));
        spawnerOccupied = false;
    }
}

public void SpawnEnemy(GameObject enemy)
{
    requestedReplacement = false;
    spawnerOccupied = true;

    
    spawnedEnemy = Instantiate(enemy, transform.position, transform.rotation);
}

public IEnumerator RequestEnemyReplacement(float time)
{
    requestedReplacement = true;
    yield return new WaitForSecondsRealtime(time);
    WorldEnemySpawner.instance.spawnerQueue.Add(this);
}

}

^THIS IS THE OBJECT I AM TRYING TO SPAWN

^this is the error

for some reason, even though this error pops up, the game works fine

however, this error always pops up when i instantiate it via script

[swift grove]

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[foggy turtle]

Youre likely using the wrong method overload or something when spawning

Its warning you that when you spawn the object its outside the scene more or less

You should use codeblocks for code though