Terrain Editor gives yellow warning. Way to fix?

Dunno if it’s kinda right place here to ask. I think it’s a Unity problem, so I’ll ask here 1st. I get always this warning:

Assets/TerrainToolkit/Editor/TerrainToolkitEditor.cs(1069,82): warning CS0618: UnityEditor.EditorGUILayout.ObjectField(string, UnityEngine.Object, System.Type, params UnityEngine.GUILayoutOption[ ])' is obsolete: Check the docs for the usage of the new parameter ‘allowSceneObjects’.’

Way to fix?

im having the same issue so annoying