.net error: System.Threading.Tasks.TaskCanceledException: The operation was canceled.

gistfile1.txt

System.AggregateException: One or more errors occurred.
(System.Threading.Tasks.TaskCanceledException: The operation was canceled.
     at System.Net.Http.ConnectHelper.ConnectAsync(String host,
Int32 port, CancellationToken cancellationToken)
     at
System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage
request, Boolean allowHttp2, CancellationToken cancellationToken)
     at
System.Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage
request, CancellationToken cancellationToken)
     at
System.Net.Http.HttpConnectionPool.GetHttpConnectionAsync(HttpRequestMessage
request, CancellationToken cancellationToken)
     at
System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage
request, Boolean doRequestAuth, CancellationToken cancellationToken)
     at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage
request, CancellationToken cancellationToken)
     at System.Net.Http.HttpClient.FinishSendAsyncBuffered(Task`1
sendTask, HttpRequestMessage request, CancellationTokenSource cts,
Boolean disposeCts)
     at SerpApi.SerpApiClient.Query(String uri, String parameter,
Boolean jsonEnabled))
    ---> SerpApi.SerpApiClientException:
System.Threading.Tasks.TaskCanceledException: The operation was canceled.
     at System.Net.Http.ConnectHelper.ConnectAsync(String host,
Int32 port, CancellationToken cancellationToken)
     at
System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage
request, Boolean allowHttp2, CancellationToken cancellationToken)
     at
System.Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage
request, CancellationToken cancellationToken)
     at
System.Net.Http.HttpConnectionPool.GetHttpConnectionAsync(HttpRequestMessage
request, CancellationToken cancellationToken)
     at
System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage
request, Boolean doRequestAuth, CancellationToken cancellationToken)
     at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage
request, CancellationToken cancellationToken)
     at System.Net.Http.HttpClient.FinishSendAsyncBuffered(Task`1
sendTask, HttpRequestMessage request, CancellationTokenSource cts,
Boolean disposeCts)
     at SerpApi.SerpApiClient.Query(String uri, String parameter,
Boolean jsonEnabled)
     at SerpApi.SerpApiClient.Query(String uri, String parameter,
Boolean jsonEnabled)
     --- End of inner exception stack trace ---
     at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean
includeTaskCanceledExceptions)
     at System.Threading.Tasks.Task`1.GetResultCore(Boolean
waitCompletionNotification)
     at System.Threading.Tasks.Task`1.get_Result()
     at SerpApi.SerpApiClient.getRawResult(String uri, String
parameter, Boolean jsonEnabled)
     at SerpApi.SerpApiClient.getJsonResult(String uri, String
parameter)
     at SerpApi.SerpApiClient.GetJson()