【发布时间】：2020-06-22 14:15:48
【问题描述】：
尝试从 Azure Analysis Services 部署我的模型时，我收到以下错误。模型中表的查询工作正常，如在 Visual Studio 中设置和处理没有错误。尝试部署时，我只收到以下错误。我检查了日志，但它们没有提供太多帮助。找出导致此错误的原因的任何帮助都会有所帮助。
Cannot process database. Reason: Failed to save modifications to the server. Error returned: 'An error occurred during On-Premise Gateway related activity. Additional error details: DM_GWPipeline_Gateway_MashupDataAccessError
Received error payload from gateway service with ID 453958: Mashup expression evaluation error. Reason: ..
Mashup expression evaluation error. Reason: .
An error happened while reading data from the provider: 'Invalid operation. The connection is closed.'
.
Technical Details:
RootActivityId: 541f9790-f5b5-4320-bf04-3b7f89a1ed18
Date (UTC): 3/10/2020 2:49:18 PM
An error occurred during On-Premise Gateway related activity. Additional error details: DM_GWPipeline_Gateway_CanceledError
The operation failed due to an explicit cancellation. Exception: System.Threading.Tasks.TaskCanceledException: A task was canceled.
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.PowerBI.DataMovement.Pipeline.Dataflow.TDFHelpers.<>c__DisplayClass7_0`1.<<GetNextResponseAsync>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.PowerBI.DataMovement.Pipeline.Dataflow.TDFHelpers.<>c__DisplayClass11_0.<<ExecuteBlockOperationAsync>b__0>d.MoveNext()
A task was canceled.
【问题讨论】：
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'从提供者读取数据时发生错误：'无效操作。连接已关闭。请监控数据源端发生的情况。