尝试使用 .NET sdk 将文件上传到 Amazon Glacier 时，我不断收到以下异常：
System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
at Amazon.Glacier.Model.Internal.MarshallTransformations.UploadArchiveResponseUnmarshaller.UnmarshallException(JsonUnmarshallerContext context, Exception innerException, HttpStatusCode statusCode)
at Amazon.Runtime.Internal.Transform.JsonResponseUnmarshaller.UnmarshallException(UnmarshallerContext input, Exception innerException, HttpStatusCode statusCode)
at Amazon.Runtime.AmazonWebServiceClient.handleHttpWebErrorResponse(AsyncResult asyncResult, WebException we)
at Amazon.Runtime.AmazonWebServiceClient.getResponseCallback(IAsyncResult result)
at Amazon.Runtime.AmazonWebServiceClient.endOperation[T](IAsyncResult result)
at Amazon.Glacier.Transfer.Internal.SinglepartUploadCommand.Execute()
at Amazon.Glacier.Transfer.ArchiveTransferManager.Upload(String vaultName, String archiveDescription, String filepath, UploadOptions options)
at UClaim.TaskRunner.Tasks.ArchiveDocuments.Execute() in c:\Projects\uclaim\src\UClaim.TaskRunner\Tasks\ArchiveDocuments.cs:line 55
我不知道为什么会发生这种情况或这意味着什么，而谷歌搜索却一无所获。我使用的代码没什么特别的，但这里是为了完整性。
var document = GetDocumentToArchive();
var manager = new ArchiveTransferManager(Amazon.RegionEndpoint.EUWest1);
document.ArchiveId = manager.Upload(
"archivedDocs",
string.Format("#{0}: {1}", document.Claim.Id, document.Description),
document.GeneratePathOnServer()).ArchiveId;