Ambiguous reference with MAUI attached property

<dxg:DataGridView.Columns>
    <dxg:TemplateColumn MinWidth="310" Caption="Customers" FieldName="Name" IsGrouped="true" GroupInterval="Alphabetical" SortOrder="Ascending">
        <dxg:TemplateColumn.DisplayTemplate>
            <DataTemplate>
                <Grid VerticalOptions="Center" Padding="15, 5, 0, 10" RowDefinitions="*" ColumnDefinitions="Auto, 3*, *">
                    <dx:DXStackLayout Orientation="Vertical" Grid.SetRow="0" Grid.SetColumn="1" Padding="0"
                                      Margin="0" Opacity="0.7">
                        <Label Text="{Binding Item.Name}" FontSize="16" FontAttributes="Bold" />