.NET Core网站使用TwitchLib API Core时突发SSL连接错误求助

我在自己的.NET Core网站里用TwitchLib来检查Twitch直播间的在线状态，之前一直运行得很正常，但最近突然出问题了——直播间的在线状态完全加载不出来，还抛出了SSL连接失败的异常，具体的错误栈信息如下：

The SSL connection could not be established, see inner exception
    at System.Net.Http.ConnectHelper.EstablishSslConnectionAsync(SslClientAuthenticationOptions sslOptions, HttpRequestMessage request, Boolean async, Stream stream, CancellationToken cancellationToken)
    at System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
    at System.Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
    at System.Net.Http.HttpConnectionPool.AddHttp11ConnectionAsync(HttpRequestMessage request)
    at System.Threading.Tasks.TaskCompletionSourceWithCancellation`1.WaitWithCancellationAsync(CancellationToken cancellationToken)
    at System.Net.Http.HttpConnectionPool.GetHttp11ConnectionAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
    at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
    at System.Net.Http.DiagnosticsHandler.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
    at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
    at TwitchLib.Api.Core.Internal.TwitchHttpClientHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
    at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
    at TwitchLib.Api.Core.HttpCallHandlers.TwitchHttpClient.GeneralRequestAsync(String url, String method, String payload, ApiVersion api, String clientId, String accessToken)
    at TwitchLib.Api.Core.ApiBase.<>c__DisplayClass13_0`1.<<TwitchGetGenericAsync>b__0>d.MoveNext()
--- End of stack trace from previous location ---
    at TwitchLib.Api.Core.ApiBase.TwitchGetGenericAsync[T](String resource, ApiVersion api, List`1 getParams, String accessToken, String clientId, String customBase)
    at Web.Models.Series.SetTwitchStatuses() in LiveStats.cs:line 102

我目前使用的核心代码是这样的：

var twitchUsernames = this.PlayerTwitches.Select(x => x.Twitch).Where(x => !string.IsNullOrEmpty(x)).ToList();

var userResponse = await TwitchApi.Api.Helix.Users.GetUsersAsync(logins: twitchUsernames);
            
var streamResponse = await TwitchApi.Api.Helix.Streams.GetStreamsAsync(userIds: userResponse.Users.Select(y => y.Id).ToList());

public static class TwitchApi
{
    public static TwitchAPI Api { get; set; }

    public static void RegisterApi(string twitchClientId, string twitchAccessToken)
    {
        Api = new TwitchAPI();
        Api.Settings.ClientId = twitchClientId;
        Api.Settings.AccessToken = twitchAccessToken;
    }
}

补充一下环境信息：这个网站部署在Windows Server 2012 R2系统的IIS上，但我本地调试项目的时候完全没有问题，一切正常。实在搞不懂为什么部署到服务器就出SSL连接的问题了，有没有大佬能帮忙分析下原因？

备注：内容来源于stack exchange，提问作者Bad Dub