Unity Terrain Tools Bug

Hello! I want to talk about a problem that I need help in unity. Everything started when I downloaded terrain tools in package manager. After the download, none of the functions came with the package appeared to work. Lets take smooth height as example. When I select it and try to use it nothing happened, not even error messages appeared. But when I try to increase brush size, I get the following message on console with yellow triange:

Saving has no effect. Your class ‘UnityEditor.TerrainTools.SmoothHeightTool’ is missing the FilePathAttribute. Use this attribute to specify where to save your ScriptableSingleton.
Only call Save() and use this attribute if you want your state to survive between sessions of Unity.
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

I could not find anything about it on internet so I thought posting this may solve the problem both for me and for those who face same issues.
Thank for any information in advance.

I have the same problem and i dont know what to do

I also have the same problem. Anyone have any ideas on how to fix this?

Any fix found for this error?? I have the some bug and it doesnt seem to work

yeah i have the same problem with the thermal erosion tool, no clue what to do