Xaml 产生路径错误，但有些仍然有效

我遇到绑定路径错误的情况。但是，某些绑定仍然有效，而其他绑定则不起作用。我有以下类（仅复制/粘贴相关位）：

代码隐藏：

class RSSManager : BaseViewModel
{
    #region Resources
    private Platforms _platformsList;
    public Platforms PlatformsList
    {
        get { return _platformsList; }
        set
        {
            _platformsList = value;
            NotifyPropertyChanged("PlatformsList");
        }
    }
    private List<IActivity> _mainActivitiesList = new List<IActivity>();
    public List<IActivity> MainActivitiesList
    {
        get { return _mainActivitiesList; }
        set
        {
            _mainActivitiesList = value;
            NotifyPropertyChanged("MainActivitiesList");
        }
    }
    private ObservableCollection<IActivity> _activitiesList = new ObservableCollection<IActivity>();
    public ObservableCollection<IActivity> ActivitiesList
    {
        get { return _activitiesList; }
        set
        {
            _activitiesList = value;
            NotifyPropertyChanged("ActivitiesList");
        }
    }
    private ObservableCollection<IActivity> _alertsList = new ObservableCollection<IActivity>();
    public ObservableCollection<IActivity> AlertsList
    {
        get { return _alertsList; }
        set
        {
            _alertsList = value;
            NotifyPropertyChanged("AlertsList");
        }
    }
    private ObservableCollection<IActivity> _invasionsList = new ObservableCollection<IActivity>();
    public ObservableCollection<IActivity> InvasionsList
    {
        get { return _invasionsList; }
        set
        {
            _invasionsList = value;
            NotifyPropertyChanged("InvasionsList");
        }
    }
    private ObservableCollection<IActivity> _outbreaksList = new ObservableCollection<IActivity>();
    public ObservableCollection<IActivity> OutbreaksList
    {
        get { return _outbreaksList; }
        set
        {
            _outbreaksList = value;
            NotifyPropertyChanged("OutbreaksList");
        }
    }
    private ObservableCollection<IActivity> _doneList = new ObservableCollection<IActivity>();
    public ObservableCollection<IActivity> DoneList
    {
        get { return _doneList; }
        set
        {
            _doneList = value;
            NotifyPropertyChanged("DoneList");
        }
    }
    #endregion

}

    public partial class Activities : Page, IOptions
{
    Options.OptionsActivities _options = new Options.OptionsActivities();
    RSSManager _manager = new RSSManager();
    public Activities()
    {
        InitVars();
        InitializeComponent();
        DataContext = _manager;
        UpdateCheckBoxes();
        UpdateTabsHeaders();
    }

}

活动.xaml ：

<Page x:Class="Warframe_Activity_Manager.Views.Activities"
  DataContext="{Binding Source={RelativeSource Self}}"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
  xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
  mc:Ignorable="d" 
  d:DesignHeight="718" d:DesignWidth="1024"
  GotFocus="Page_GotFocus"
Title="Activities">
<Grid Name="MainGrid" Background="Transparent">
    <Grid.RowDefinitions>
        <RowDefinition Height="30" />
        <RowDefinition Height="*" />
    </Grid.RowDefinitions>
    <StackPanel Name="PlatformChoices" Orientation="Horizontal" Background="Transparent">
        <Label Name="ChoicePCLabel" Content="Show PC Activities" Foreground="Aqua" VerticalAlignment="Center"></Label>
        <CheckBox Name="ChoicePC" VerticalAlignment="Center" Click="Platform_Click"/>
        <Label Name="ChoicePS4Label" Content="Show PlayStation 4 Activities" Foreground="Aqua" VerticalAlignment="Center"></Label>
        <CheckBox Name="ChoicePS4" VerticalAlignment="Center" Click="Platform_Click"/>
        <Label Name="ChoiceXB1Label" Content="Show XBox One Activities" Foreground="Aqua" VerticalAlignment="Center"></Label>
        <CheckBox Name="ChoiceXB1" VerticalAlignment="Center" Click="Platform_Click"/>
    </StackPanel>
    <Button Name="Refresh" HorizontalAlignment="Right" Content="Refresh" Click="Refresh_Click"/>
    <TabControl Name="Tabs" Grid.Row="1" Background="Transparent">
        <TabItem Name="TabAll" Header="All Activities" BorderThickness="0">
            <ListView Name="ListAll" Background="Transparent" ItemsSource="{Binding ActivitiesList}" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch">
                <ListView.ItemTemplate>
                    <DataTemplate>
                        <Grid>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="1*"/>
                                <ColumnDefinition Width="1*"/>
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="1*"/>
                                <RowDefinition Height="1*"/>
                            </Grid.RowDefinitions>
                            <StackPanel Name="ActivityTypeContainer" Orientation="Horizontal" HorizontalAlignment="Left">
                                <Label Name="ActivityTypeLabel" VerticalAlignment="Center" Foreground="Red" Content="Activity Type :"/>
                                <Label Name="ActivityType" VerticalAlignment="Center" Foreground="Red" Content="{Binding Path=Type}"/>
                            </StackPanel>
                            <StackPanel Name="ActivityPlatformContainer" Grid.Column="1" Orientation="Horizontal" HorizontalAlignment="Right" Margin="0, 0, 10, 0">
                                <Label Name="ActivityPlatformLabel"  VerticalAlignment="Center" Foreground="Blue" Content="Platform :"/>
                                <Label  Name="ActivityPlatform" VerticalAlignment="Center" Foreground="Blue" Content="{Binding Path=Platform}"/>
                            </StackPanel>
                            <StackPanel Name="ActivityInfoContainer" Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Left">
                                <Label Name="ActivityInfoLabel" VerticalAlignment="Center" Foreground="Orange" Content="Activity Information : "/>
                                <Label Name="ActivityInfo" VerticalAlignment="Center" Foreground="Orange" Content="{Binding Path=Info}"/>
                            </StackPanel>
                            <StackPanel Name="ActivityDoneContainer" Grid.Column="1" Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Right"  Margin="0, 0, 10, 0">
                                <Label Name="ActivityDoneLabel" VerticalAlignment="Center" Foreground="Green" Content="Finished : "/>
                                <CheckBox Name="ActivityDone" VerticalAlignment="Center" IsChecked="{Binding Path=Done, Mode=TwoWay}" Click="ActvityDone_Click"/>
                            </StackPanel>
                        </Grid>
                    </DataTemplate>
                </ListView.ItemTemplate>
            </ListView>
        </TabItem>
    </TabControl>
</Grid>

错误 ：

System.Windows.Data 错误： 40 ： 绑定表达式路径错误： 在"对象"相对源"（哈希代码=16143157）"上找不到"活动列表"属性。绑定表达式：路径=活动列表;DataItem='RelativeSource' （HashCode=16143157）;目标元素是"列表视图"（名称="列表全部"）;目标属性是"ItemsSource"（类型"IEnumerable"） System.Windows.Data 错误： 40 ： 绑定表达式路径错误： 在"对象"相对源"（哈希代码=16143157）"上找不到"警报列表"属性。绑定表达式：路径=警报列表;DataItem='RelativeSource' （HashCode=16143157）;目标元素是"列表视图"（名称="列表警报"）;目标属性是"ItemsSource"（类型"IEnumerable"） System.Windows.Data 错误： 40 ： 绑定表达式路径错误： 在"对象"相对源"（哈希代码=16143157）"上找不到"入侵列表"属性。绑定表达式：路径=入侵列表;DataItem='RelativeSource' （HashCode=16143157）;目标元素是"列表视图"（名称="列表入侵"）;目标属性是"ItemsSource"（类型"IEnumerable"） System.Windows.Data 错误： 40 ： 绑定表达式路径错误： 在"对象"相对源"（哈希代码=16143157）"上找不到"爆发列表"属性。绑定表达式：路径=爆发列表;DataItem='RelativeSource' （HashCode=16143157）;目标元素是"列表视图"（名称="列表爆发"）;目标属性是"ItemsSource"（类型"IEnumerable"） System.Windows.Data 错误： 40 ： 绑定表达式路径错误： 在"对象"相对源"（哈希代码=16143157）"上找不到"完成列表"属性。绑定表达式：路径=完成列表;DataItem='RelativeSource' （HashCode=16143157）;目标元素是"列表视图"（名称="列表完成"）;目标属性是"ItemsSource"（类型"IEnumerable"）

我还没有进入保理模板的部分，但我认为这不是这里的问题。

如前所述，即使我收到错误，程序也会显示我想要的内容。但是，我接下来添加的绑定根本不起作用，输出给出相同的错误类型（错误的路径）。我在这里做错了什么？

DataContext="{Binding Source={RelativeSource Self}}"