ErrorMessagePopup.cs

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using System;
using TMPro;
using UnityEngine;
using UnityEngine.UI;
 
public class ErrorMessagePopup : MonoBehaviour
{
    [SerializeField] private Button _closeButton;
    [SerializeField] private Transform _root;
    [SerializeField] private TextMeshProUGUI _errorMessageText;
 
    public event Action CloseButtonClicked; 
 
    private void Start()
    {
        _root.gameObject.SetActive(false);
    }
 
    private void OnEnable()
    {
        _closeButton.onClick.AddListener(OnCloseButtonClicked);
    }
 
    private void OnDisable()
    {
        _closeButton.onClick.RemoveListener(OnCloseButtonClicked);
    }
 
    private void OnCloseButtonClicked()
    {
        _root.gameObject.SetActive(false);
        
        CloseButtonClicked?.Invoke();
    }
 
    public void ShowErrorMessage(string text)
    {
        _root.gameObject.SetActive(true);
        
        _errorMessageText.text = text;
    }
}