Assets\Assets\Utility\SimpleActivatorMenu.cs(10,16): error CS0619: 'GUIText' is obsolete: 'GUIText has been removed. Use UI.Text instead.' code example

Example: how to solve error CS0619: 'GUIText' is obsolete: 'GUIText has been removed. Use UI.Text instead.'

/*Open the . cs file that Unity is indicating on the error (you can use any text editor for this, even notepad)
Insert*/
using UnityEngine. UI;
/*on the beggining of the . cs file.
Replace GUIText with just Text.*/