该标记在 XML 命名空间中不存在

我在'FluidMoveBehavior'上看到以下错误。

The tag 'FluidMoveBehavior' does not exist in XML namespace
'http://schemas.microsoft.com/expression/2010/interactions'.
Line 22 Position 14.

下面是 XAML 文件：

<Window x:Class="GoogleMapProject.KinectOverlay"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
        xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
        xmlns:GoogleMapProject_Behaviors="clr-namespaces:GoogleMapProject.Behaviors"
        WindowState="Maximized" WindowStyle="None" Background="Transparent"
                     AllowsTransparency="True"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d"
        Height="300"
        Width="300"
        Title="KinectOverlay"
        DataContext="{Binding PoseViewModel,
                      Source={StaticResource MainViewModel}}">
    <Grid>
        <i:Interaction.Behaviors>
            <ei:FluidMoveBehavior AppliesTo="Children" Duration="0:0:0.5">
                <ei:FluidMoveBehavior.EaseX>
                    <SineEase EasingMode="EaseInOut"/>
                </ei:FluidMoveBehavior.EaseX>
                <ei:FluidMoveBehavior.EaseY>
                    <SineEase EasingMode="EaseInOut"/>
                </ei:FluidMoveBehavior.EaseY>
            </ei:FluidMoveBehavior>
        </i:Interaction.Behaviors>
        <Canvas Background="Transparent"
                DataContext="{Binding PoseViewModel,
                              Source={StaticResource MainViewModel}}">
            <!-- Left hand -->
            <Image Source="{Binding LeftHandImage}" x:Name="leftHand" Stretch="Fill"
                   Canvas.Left="{Binding LeftHandPosition.X, Mode=TwoWay}"  
                   Canvas.Top="{Binding LeftHandPosition.Y, Mode=TwoWay}"
                   Visibility="{Binding HandVisibility}" Opacity="0.75"
                   Height="118" Width="80" RenderTransformOrigin="0.5,0.5">
                <Image.RenderTransform>
                    <TransformGroup>
                        <ScaleTransform ScaleX="{Binding LeftHandScale}"
                                        ScaleY="{Binding LeftHandScale}"/>
                        <SkewTransform/>
                        <RotateTransform/>
                        <TranslateTransform X="-40" Y="-59"/>
                    </TransformGroup>
                </Image.RenderTransform>
            </Image>
            <!-- Right hand -->
            <Image x:Name="righthand" Source="{Binding RightHandImage}"
                   Stretch="Fill"
                   Canvas.Left="{Binding RightHandPosition.X, Mode=TwoWay}"  
                   Canvas.Top="{Binding RightHandPosition.Y, Mode=TwoWay}"
                   Visibility="{Binding HandVisibility}" Opacity="0.75"
                   Height="118" Width="80" RenderTransformOrigin="0.5,0.5">
                <Image.RenderTransform>
                    <TransformGroup>
                        <ScaleTransform ScaleX="{Binding RightHandScale}"
                                        ScaleY="{Binding RightHandScale}"/>
                        <SkewTransform/>
                        <RotateTransform/>
                        <TranslateTransform X="-40" Y="-59"/>
                    </TransformGroup>
                </Image.RenderTransform>
            </Image>
            <!-- Video -->
            <Image Canvas.Left="0" Canvas.Top="100" Width ="360"
                   Visibility="{Binding ShowVideo,
                          Converter={StaticResource booleanToVisibilityConverter}}">
                <i:Interaction.Behaviors>
                    <GoogleMapProject_Behaviors:DisplayVideoBehavior/>
                </i:Interaction.Behaviors>
            </Image>
            <!-- Shows last speech command -->
            <TextBlock Canvas.Left="10" Canvas.Top="500"
                       Text="{Binding LastCommand}" FontSize="36"
                       Foreground="#FF001900">
            </TextBlock>
        </Canvas>
    </Grid>
</Window>