请有人可以帮助。我遇到了这个异常下面，而试图编译一个XAML代码。
System.Windows.Markup.XamlParseException occurred HResult= 0x 80131501 Message ='Provide value on 'System.Windows.Baml2006.TypeConverterMarkupExtension'引发了异常。'行号'28'和行位置'22'。Source=PresentationFramework StackTrace：在System.Windows.Markup.WpfXamlLoader.Load（XamlReader xamlReader，IXamlObjectWriterFactory writerFactory，Boolean skipJournaledProperties，Object rootObject，XamlObjectWriterSettings settings，Uri baseUri）位于System.Windows.Markup.WpfXamlLoader.LoadBaml（XamlReader xamlReader，Boolean skipJournaledProperties，Object rootObject，XamlAccessLevel accessLevel，Uri baseUri）位于System.Windows.Markup.XamlReader.LoadBaml（Stream stream，ParserContext parserContext，Object parent，Boolean closeStream）at System.Windows.Application.LoadComponent（Object component，Uri resourceLocator）at XAMLImage.MainWindow.InitializeComponent（）in c：\users\mypc\documents\visual studio 2017\Projects\XAMLimage\XAMLimage\MainWindow.xaml：line 1
内部异常1：IO异常：无法定位资源“sitefiles/services”。
异常发生在后面代码的c# partial类的“InitializeComponent（）”处。下面是c# partial类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace XAMLImage
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
    }
}

下面是XAML代码

<Window x:Class="XAMLImage.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:XAMLImage"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="604">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height = "1*"/>
            <RowDefinition Height = "1*"/>
        </Grid.RowDefinitions>

        <StackPanel Orientation="Horizontal">
            <Image Width = "200" VerticalAlignment = "Top" Margin = "30"/>
            <Image Width = "200" Source = "Images\flow5.gif" 
            VerticalAlignment = "Top" Margin = "30" Opacity = "0.5"/>
        </StackPanel>

        <StackPanel Grid.Row = "1">
            <Ellipse Height = "100" 
            Width = "200" 
            HorizontalAlignment = "Center" 
            Margin = "30">

                <Ellipse.Fill>
                    <ImageBrush ImageSource = "Images\bubble.png" />
                </Ellipse.Fill>

            </Ellipse>


        </StackPanel>
    </Grid>
</Window>

Image的Source URL和ImageBrush元素的ImageSource URL下面有一条蓝色的波浪线。我将鼠标悬停在它们上面，智能感知显示“无法找到文件'c：\Program Files（x86）\Microsoft Visual Studio\2017\Community\Common7\IDE\images%5Cmyfilename.gif'”（其中一个文件是gif，另一个是png）。我认为这是要定位的文件的非常规路径，但我继续在该路径上创建URL，但预期仍然抛出。
我正在使用Microsoft Visual Studio Community 2017
干杯