Open the ClickableObjects.cs script and modify it to use mouse events so that it reads as follows:

File: ClickableObjects.cs
using UnityEngine; 
using UnityEngine.Events; 
 
public class ClickableObjectEvent : UnityEvent<GameObject> { } 
 
public class ClickableObject : MonoBehaviour { 
 
    public ClickableObjectEvent OnClickableObjectClicked = new ClickableObjectEvent(); 
 
    void OnMouseDown() { 
        GameController.instance.PlayClickFeedback(); 
        OnClickableObjectClicked.Invoke(gameObject); 
    } 
} 

If you press Build And Run now, much of the UI should work correctly! We need to make further changes to the Move and Scale tools.