Botframework Microsoft.Bot.Connector错误：未注册服务提供程序实例

我按照上面的示例代码进行操作

当我向bot发送消息时，出现如下错误：

未注册服务提供程序实例。请在使用ServiceProvider.Instance之前致电RegisterServiceProvider。

发生在

var-appCredentials=新的MicrosoftAppCredentials（此配置）

csproj先生

Webapi-控制器

[HttpPost]
[Route("Send")]
public async Task<HttpResponseMessage> Send([FromBody]Activity activity)
{
        //Error happens on this line!!!
        var appCredentials = new MicrosoftAppCredentials(this._configuration);
        var connector = new ConnectorClient(new Uri(activity.ServiceUrl), appCredentials);

        var reply = activity.CreateReply();

        if (activity.Type == ActivityTypes.Message)
        {
            // calculate something for us to return
            int length = (activity.Text ?? string.Empty).Length;
            // return our reply to the user
            reply = activity.CreateReply($"You sent {activity.Text} which was {length} characters");
        }
        else
        {
            //....
        }

        await connector.Conversations.ReplyToActivityAsync(reply);
        var response = new HttpResponseMessage(HttpStatusCode.OK);
        return response;
}

[HttpPost]
[路线（“发送”）]
公共异步任务发送（[FromBody]活动）
{
//错误发生在这一行！！！
var appCredentials=新的MicrosoftAppCredentials（此配置）；
var connector=new ConnectorClient（新Uri（activity.ServiceUrl）、appCredentials）；
var reply=activity.CreateReply（）；
if（activity.Type==ActivityTypes.Message）
{
//算点东西让我们回去
int length=（activity.Text？？string.Empty）.length；
//将我们的回复返回给用户
reply=activity.CreateReply（$“您发送的{activity.Text}为{length}个字符”）；
}
其他的
{
//....
}
等待连接器.Conversations.ReplyToActivityAsync（reply）；
var响应=新的HttpResponseMessage（HttpStatusCode.OK）；
返回响应；
}


错误（使用模拟器测试）
信息
未注册服务提供程序实例。请在使用ServiceProvider.Instance之前调用RegisterServiceProvider


来源
Microsoft.Bot.Connector.Common


堆栈跟踪
位于Microsoft.Bot.Connector.ServiceProvider.ThrowOnNullInstance（）处
在Microsoft.Bot.Connector.MicrosoftAppCredentials..ctor（IConfiguration configuration，ILogger logger）
在LotoBot.Webapi.Controllers.FbMsgController.d_u4.MoveNext（）中


我被困了一晚，请帮帮我，谢谢你
 只需在启动类的ConfigureServices方法上调用
services.UseBotConnector（）
。
此方法由Microsoft.Bot.Connector.BotServiceProviderExtensions扩展类提供。
再尝试半天后，我发现这些代码可以使用。不知道这是否是错误。非常抱歉，这不是Microsoft.Bot.Connector.AspNetCore 3.6.0-alpha的错误，任何有此问题的人请查看@Luiz Carlos Faria和
public IConfigurationRoot Configuration { get; }
public Startup(IHostingEnvironment env)
{
    var builder = new ConfigurationBuilder()
        .SetBasePath(env.ContentRootPath)
        .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
        .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
        .AddEnvironmentVariables();
    Configuration = builder.Build();
}


// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    services.AddSingleton(_ => Configuration);

    // Add framework services.
    services.AddMvc(options =>
    {
        options.Filters.Add(typeof(TrustServiceUrlAttribute));
    });


}

// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    loggerFactory.AddConsole(Configuration.GetSection("Logging"));
    loggerFactory.AddDebug();


    app.UseStaticFiles();
    app.UseBotAuthentication(new StaticCredentialProvider(
        Configuration.GetSection(MicrosoftAppCredentials.MicrosoftAppIdKey)?.Value,
        Configuration.GetSection(MicrosoftAppCredentials.MicrosoftAppPasswordKey)?.Value));
    app.UseMvc();
}

[HttpPost]
[Route("Send")]
public async Task<HttpResponseMessage> Send([FromBody]Activity activity)
{
        //Error happens on this line!!!
        var appCredentials = new MicrosoftAppCredentials(this._configuration);
        var connector = new ConnectorClient(new Uri(activity.ServiceUrl), appCredentials);

        var reply = activity.CreateReply();

        if (activity.Type == ActivityTypes.Message)
        {
            // calculate something for us to return
            int length = (activity.Text ?? string.Empty).Length;
            // return our reply to the user
            reply = activity.CreateReply($"You sent {activity.Text} which was {length} characters");
        }
        else
        {
            //....
        }

        await connector.Conversations.ReplyToActivityAsync(reply);
        var response = new HttpResponseMessage(HttpStatusCode.OK);
        return response;
}