Json 错误与netcoreapp1.0不兼容（.NETCoreApp，版本=v1.0）

我正在尝试制作一个聊天应用程序，并想使用信号器。但是，当我尝试安装Nuget软件包时，我总是遇到这个错误

Microsoft.AspNet.SignalR.Core 2.2.1 is not compatible with netcoreapp1.0 (.NETCoreApp,Version=v1.0) / win-x86.

我试图找到一个解决方案，但我找到的所有解决方案都声称修改project.json中的依赖项。我使用的是VS2017，没有project.json，但我可以编辑project.csproj文件中的依赖项，如下所示

<ItemGroup>
<PackageReference Include="Gma.QrCodeNet.Encoding" Version="1.0.1" />
<PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.0.0" />
<PackageReference Include="Microsoft.AspNetCore" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.2" />
<PackageReference Include="Microsoft.AspNetCore.Session" Version="1.1.1" />
<PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.1" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="1.1.1" PrivateAssets="All" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="1.1.1" />
<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer.Design" Version="1.1.1" PrivateAssets="All" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="1.1.0" PrivateAssets="All" />
<PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="1.1.1" />
<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="1.1.1" />
<PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="1.0.0" PrivateAssets="All"/>
<PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="1.1.0" />
<PackageReference Include="System.Xml.XmlDocument" Version="4.3.0" />

有没有人知道如何删除这个错误，这样我就可以使用信号器来制作一个聊天应用程序