Error in Console, for Editor Settings, don't understand how to fix

The error message:

There are menu items registered under
Edit/Project Settings: Localization
Consider using [SettingsProvider]
attribute to register in the Unified
Settings Window.
UnityEditor.EditorApplication.Internal_CallUpdateFunctions()

I have no idea where this is, or how to fix it, despite having searched forums and docs.

I have no idea either. I’ve tried to fix to no avail.