我有下面的代码

var factory = new ConnectionFactory()
{
    HostName = "path.to.host.net",
    UserName = "guest",
    Password = "guest",
    VirtualHost = "myhost"
};
var connection = factory.CreateConnection();

上面的最后一行抱怨了以下错误
文件加载异常：未能加载文件或程序集“System.Threading.Tasks.Extensions，Version=4.2.0.0，Culture=neutral，PublicKeyToken=cc7b13ffcd2ddd51”或它的某个依赖项。找到的程序集的清单定义与程序集引用不匹配。（HRESULT异常：0x80131040）中的一个值
我检查了融合日志，它显示以下内容

Assembly manager loaded from:  C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll
Running under executable  C:\Program Files (x86)\IIS Express\iisexpress.exe
--- A detailed error log follows. 

=== Pre-bind state information ===
LOG: DisplayName = System.Threading.Tasks.Extensions, Version=4.2.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
 (Fully-specified)
LOG: Appbase = file:///C:/Path/To/Web/
LOG: Initial PrivatePath = C:\Path\To\\Web\bin
Calling assembly : System.Threading.Channels, Version=4.0.2.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\Path\To\Web\web.config
LOG: Using host configuration file: C:\Users\fahadash\Documents\IISExpress\config\aspnet.config
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Post-policy reference: System.Threading.Tasks.Extensions, Version=4.2.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
LOG: Attempting download of new URL file:///C:/Users/fahadash/AppData/Local/Temp/Temporary ASP.NET Files/vs/699f3d52/97d4d2c/System.Threading.Tasks.Extensions.DLL.
LOG: Attempting download of new URL file:///C:/Users/fahadash/AppData/Local/Temp/Temporary ASP.NET Files/vs/699f3d52/97d4d2c/System.Threading.Tasks.Extensions/System.Threading.Tasks.Extensions.DLL.
LOG: Attempting download of new URL file:///C:/Path/To/Web/bin/System.Threading.Tasks.Extensions.DLL.
WRN: Comparing the assembly name resulted in the mismatch: Revision Number
ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated.

我在IL反汇编程序中打开了在bin中找到的DLL，并检查了清单，发现了以下内容
上述4.2.0.1内容依赖于系统.运行时.编译器服务.不安全的4.0.4.1，该文件已经在bin中。
因此，4.2.0.0与www.example.com不匹配4.2.0.1所以我决定添加以下绑定重定向

<dependentAssembly>
  <assemblyIdentity name="System.Threading.Tasks.Extensions" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
  <bindingRedirect oldVersion="0.0.0.0-4.2.0.1" newVersion="4.2.0.1" />
</dependentAssembly>

我仍然得到相同的运行时错误抱怨，它没有找到扩展4. 2. 0. 0。我错过了什么？