Issues with character selection mechanics

[void wasp]

I have code for character selection, and for the Network Manager, the player prefab has a placeholder with Network Identity. Everything works, but the character is not controllable with the character selection code. However, without the character selection code, everything works.
I have a code that prevents camera duplication for both characters. However, when selecting a character, the camera turns off, and if I remove this code, the camera duplicates. I don't know how to fix it, and I've been struggling with this issue for three days already. Please help me.
if (!isLocalPlayer)
{
playerCamera.gameObject.SetActive(false);
}
If you need the code for character control and character selection, please provide it.The code was taken from https://youtu.be/33cAxBiFUTw.I just wanted to do something to play with my friends but didn't know it would get so complicated. + my knowledge in the mirror is not great

[crystal dove]

How do you spawn characters after character selection

[void wasp]

public class CharacterSelect : NetworkBehaviour
{
[SerializeField] private GameObject characterSelectDisplay = default;
[SerializeField] private Transform characterPreviewParent = default;
[SerializeField] private TMP_Text characterNameText = default;
[SerializeField] private float turnSpeed = 90f;
[SerializeField] private Character[] characters = default;

    private int currentCharacterIndex = 0;
    private List<GameObject> characterInstances = new List<GameObject>();

    public override void OnStartClient()
    {
        if (characterPreviewParent.childCount == 0)
        {
            foreach (var character in characters)
            {
                GameObject characterInstance =
                    Instantiate(character.CharacterPreviewPrefab, characterPreviewParent);

                characterInstance.SetActive(false);

                characterInstances.Add(characterInstance);
            }
        }

        characterInstances[currentCharacterIndex].SetActive(true);
        characterNameText.text = characters[currentCharacterIndex].CharacterName;

        characterSelectDisplay.SetActive(true);
    }

    private void Update()
    {
        characterPreviewParent.RotateAround(
            characterPreviewParent.position,
            characterPreviewParent.up,
            turnSpeed * Time.deltaTime);
    }

    public void Select()
    {
        CmdSelect(currentCharacterIndex);
        characterSelectDisplay.SetActive(false);
    }

    [Command(requiresAuthority = false)]
    public void CmdSelect(int characterIndex, NetworkConnectionToClient sender = null)
    {
        GameObject characterInstance = Instantiate(characters[characterIndex].GameplayCharacterPrefab);
        NetworkServer.Spawn(characterInstance, sender);
    }

[brave summit]

I would try doing this in the NetworkManager script

[crystal dove]

As I see, you never call AddPlayerForConnection() method, so isLocalPlayer will be never set

Call this method instead of NetworkServer.Spawn()

[void wasp]

thanks