I don't know some changes....

Wino.Mail.WinUI/Views/Abstract/SettingsPageBase.cs

@@ -1,16 +0,0 @@
-using Microsoft.UI.Xaml;
-using Wino.Mail.ViewModels;
-
-namespace Wino.Views.Abstract
-{
-    public class SettingsPageBase<T> : BasePage<T> where T : BaseViewModel
-    {
-        public string Title
-        {
-            get { return (string)GetValue(TitleProperty); }
-            set { SetValue(TitleProperty, value); }
-        }
-
-        public static readonly DependencyProperty TitleProperty = DependencyProperty.Register(nameof(Title), typeof(string), typeof(SettingsPageBase<T>), new PropertyMetadata(string.Empty));
-    }
-}