I am not able to refresh my power BI at desktop and get below message. Can you help? Feedback Type: Frown (Error) Timestamp: 2020-09-23T04:29:09.9309179Z Local Time: 2020-09-23T12:29:09.9309179+08:00 Session ID: ca5c3cb5-f882-4035-b084-4a8fb5628653 Release: August 2020 Product Version: 2.84.701.0 (20.08) (x64) Stack Trace: at Microsoft.Mashup.Evaluator.ChannelMessenger.CreateChannel() at Microsoft.PowerBI.Client.OleDbProvider.PowerBIMashupDataSource.EvaluationSession.Dispose() at Microsoft.Mashup.Host.ProviderShared.PackageMashupEvaluator.<>c__DisplayClass7_0.<Evaluate>b__1(Object o) at Microsoft.Mashup.Evaluator.Interface.InvokeManyAction`1.CheckDone() at Microsoft.Mashup.OleDbProvider.DataHost.MashupEvaluator.<>c__DisplayClass4_1.<Evaluate>b__1() at Microsoft.Mashup.OleDbProvider.DataHost.AsyncResultIDataReaderSourceHelper.InvokeThenOnDispose(Action`1 callback, AsyncResult`1 result, Action action) at Microsoft.Mashup.OleDbProvider.DataHost.MashupEvaluator.<>c__DisplayClass4_0.<Evaluate>b__0(EvaluationResult2`1 result) at Microsoft.Mashup.Evaluator.Interface.EvaluationResultExtensions.InvokeThenOnDispose(Action`1 callback, EvaluationResult2`1 result, Action action) at Microsoft.Mashup.Evaluator.Interface.EvaluationResultExtensions.InvokeThenOnDispose[T](Action`1 callback, EvaluationResult2`1 result, Action action) at Microsoft.Mashup.Evaluator.LimitedDocumentEvaluatorFactory.Evaluation`1.Complete(EvaluationResult2`1 result) at Microsoft.Mashup.Evaluator.Interface.EvaluationResultExtensions.InvokeThenOnDispose(Action`1 callback, EvaluationResult2`1 result, Action action) at Microsoft.Mashup.Evaluator.Interface.EvaluationResultExtensions.InvokeThenOnDispose[T](Action`1 callback, EvaluationResult2`1 result, Action action) at Microsoft.Mashup.Evaluator.DocumentEvaluator.<>c__DisplayClass7_0`1.<BeginGetResult>b__0(EvaluationResult2`1 result) at Microsoft.Mashup.Evaluator.Interface.EvaluationResultExtensions.InvokeThenOnDispose(Action`1 callback, EvaluationResult2`1 result, Action action) at Microsoft.Mashup.Evaluator.Interface.EvaluationResultExtensions.InvokeThenOnDispose[T](Action`1 callback, EvaluationResult2`1 result, Action action) at Microsoft.Mashup.Evaluator.LimitedDocumentEvaluatorFactory.Evaluation`1.Complete(EvaluationResult2`1 result) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.RemoteEvaluation`1.TryComplete(EvaluationResult2`1 result) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.RemoteEvaluation`1.TryCompleteWithException(Exception exception) at Microsoft.Mashup.Evaluator.RemoteDocumentEvaluator.RemoteEvaluation.Evaluate(Boolean enableFirewall) at Microsoft.Mashup.Evaluator.EvaluatorThreadPool.EvaluatorThread(Object state) at Microsoft.Mashup.Evaluator.SafeThread2.<>c__DisplayClass9_0.<CreateAction>b__0(Object o) PowerBINonFatalError: {"AppName":"PBIDesktop","AppVersion":"2.84.701.0","ModuleName":"","Component":"Microsoft.Mashup.Evaluator.ChannelMessenger","Error":"Microsoft.Mashup.Host.Document.SerializedException - System.NullReferenceException","MethodDef":"CreateChannel","ErrorOffset":""} OS Version: Microsoft Windows NT 10.0.17134.0 (x64 en-US) CLR Version: 4.7 or later [Release Number = 461808] Peak Virtual Memory: 38.6 GB Private Memory: 647 MB Peak Working Set: 935 MB IE Version: 11.1667.17134.0 User ID: afd765c8-c28a-4682-84fe-7a51a434a187 Workbook Package Info: 1* - en-US, Query Groups: 4, fastCombine: Disabled, runBackgroundAnalysis: True. Telemetry Enabled: True Snapshot Trace Logs: C:\Users\amchan\AppData\Local\Microsoft\Power BI Desktop\FrownSnapShot829766040.zip Model Default Mode: Import Model Version: PowerBI_V1 Is Report V3 Models Enabled: False Enabled Preview Features: PBI_NewWebTableInference Disabled Preview Features: PBI_shapeMapVisualEnabled PBI_SpanishLinguisticsEnabled PBI_ImportTextByExample PBI_qnaLiveConnect PBI_inlineExplore PBI_v3ModelsPreview PBI_dataSearchCuration PBI_azureMapVisual PBI_dataPointLassoSelect Disabled DirectQuery Options: TreatHanaAsRelationalSource Cloud: GlobalCloud DPI Scale: 100% Supported Services: Power BI
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