UI system will be removed in future release?

Unity Engine
1

Hi all!

I have this “Press Triangle to Enter” UI pop-up text popping up when standing infront of a door.
The script works fine but it has this Warning Triangle in the Console window and inside the script is says:
GUI Texture is obsolete;

How can I fix this Error message without re-programming the entire function?
““This bit here is where I can find the GUITexture…This component is part of the legacy UI system and will be removed in future release””

   [SerializeField]
    private Texture2D popupImage;

    private GUITexture triangleTexture;

    public GUITexture Triangle { get; private set; }

    // Use this for initialization
    void Start()

    {
        theTextBox = FindObjectOfType<TextExamineManager>();
        triangleTexture = GameObject.Find("TriangleExamine").GetComponent<GUITexture>();
    }

Thanks in advance!

2

you can make UI image with the new UI, image component
https://docs.unity3d.com/Manual/script-Image.html