我的生产代码已运行了几个月，使用CosmosDB没有问题，但现在我已经有了几条带有此消息的日志。
有人可以帮助我理解这个的本质，或者可能指出我可以阅读的内容吗？
Microsoft.Azure.Documents.DocumentClientException: Message: Channel is closed
at Microsoft.Azure.Documents.Client.ClientExtensions.<ParseResponseAsync>d__4.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at Microsoft.Azure.Documents.GatewayStoreModel.<>c__DisplayClass10.<<InvokeAsync>b__f>d__12.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at Microsoft.Azure.Documents.BackoffRetryUtility`1.<>c__DisplayClass2.<<ExecuteAsync>b__0>d__4.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at Microsoft.Azure.Documents.BackoffRetryUtility`1.<ExecuteRetry>d__1b.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at Microsoft.Azure.Documents.BackoffRetryUtility`1.<ExecuteRetry>d__1b.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at Microsoft.Azure.Documents.BackoffRetryUtility`1.<ExecuteAsync>d__a.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at Microsoft.Azure.Documents.GatewayStoreModel.<InvokeAsync>d__1f.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at Microsoft.Azure.Documents.GatewayStoreModel.<ProcessMessageAsync>d__2.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at Microsoft.Azure.Documents.Client.DocumentClient.<ExecuteQueryAsync>d__328.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at Microsoft.Azure.Documents.Query.DocumentQueryClient.<ExecuteQueryAsync>d__a.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at Microsoft.Azure.Documents.Query.DocumentQueryExecutionContextBase.<ExecuteQueryRequestInternalAsync>d__38.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at Microsoft.Azure.Documents.Query.DocumentQueryExecutionContextBase.<ExecuteQueryRequestAsync>d__14.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at Microsoft.Azure.Documents.Query.DocumentQueryExecutionContextBase.<ExecuteRequestAsync>d__e.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n