Connecting to Power BI Dataset fails

[mickjaeger]

I created a new dataset on my company Power BI Service. The dataset is published to my personal workspace for testing. I am using a Power BI Pro license.

I attempted to connect to this dataset via Power BI Desktop but it continuously fails. I also did enable "Direct Query for Power BI Datasets ..." which also seems to be required. 

**Below is Copy of the error details from Power BI Desktop**

Feedback Type:
Frown (Error)

Error Message:
Value cannot be null.
Parameter name: Data Source

Stack Trace:
System.ArgumentNullException
at System.Windows.Forms.Control.MarshaledInvoke(Control caller, Delegate method, Object[] args, Boolean synchronous)
at System.Windows.Forms.Control.Invoke(Delegate method, Object[] args)
at System.Windows.Forms.WindowsFormsSynchronizationContext.Send(SendOrPostCallback d, Object state)
at Microsoft.PowerBI.Client.Windows.Services.UIBlockingService.AllowModalDialogs(Action action)
at Microsoft.PowerBI.Client.Windows.LiveConnectHelpers.LiveConnectionPropertiesValidator.TryGetValidLiveConnectionProperties(IPowerBIWindowService windowService, ILiveConnectionProperties connectionProperties, Report report, ILiveConnectionCompleter liveConnectionPropertiesCompleter, ILiveConnectionProperties& validLiveConnectionProperties, Boolean& resultIsSameConnection, ValidationStatus& validationStatus)
at Microsoft.PowerBI.Client.Windows.PowerBIDataImporter.AreAnalysisServicesConnectionPropertiesValid(IPowerBIWindowService windowService, Report report, ILiveConnectionProperties connectionProperties, AnalysisServicesConnectionMode connectionMode, ILiveConnectionCompleter completer, ILiveConnectionProperties& validConnectionProperties)
at Microsoft.PowerBI.Client.Windows.PowerBIDataImporter.ValidateAndCreateAnalysisServicesConnection(ILiveConnectionProperties connectionProperties, Boolean addToFormulaHistory, Boolean isExternalDataset)
at Microsoft.PowerBI.Client.Windows.PowerBIDataImporter.<>c__DisplayClass24_0.<<AddPowerBIDatahubSource>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.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.<HandleAwaitableAsyncExceptions>d__1.MoveNext()

Stack Trace Message:
Value cannot be null.
Parameter name: Data Source

Invocation Stack Trace:
at Microsoft.Mashup.Host.Document.ExceptionExtensions.GetCurrentInvocationStackTrace()
at Microsoft.Mashup.Client.UI.Shared.StackTraceInfo..ctor(String exceptionStackTrace, String invocationStackTrace, String exceptionMessage)
at Microsoft.PowerBI.Client.Windows.Telemetry.PowerBIUserFeedbackServices.GetStackTraceInfo(Exception e)
at Microsoft.PowerBI.Client.Windows.Telemetry.PowerBIUserFeedbackServices.ReportException(IWindowHandle activeWindow, IUIHost uiHost, FeedbackPackageInfo feedbackPackageInfo, Exception e, Boolean useGDICapture)
at Microsoft.Mashup.Client.UI.Shared.UnexpectedExceptionHandler.<>c__DisplayClass14_0.<HandleException>b__0()
at Microsoft.Mashup.Client.UI.Shared.UnexpectedExceptionHandler.HandleException(Exception e)
at Microsoft.PowerBI.Client.Windows.Utilities.PowerBIFormUnexpectedExceptionHandler.HandleException(Exception e)
at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.<HandleAwaitableAsyncExceptions>d__1.MoveNext()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted)
at System.Threading.Tasks.Task`1.TrySetException(Object exceptionObject)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception)
at Microsoft.PowerBI.Client.Windows.PowerBIDataImporter.<>c__DisplayClass24_0.<<AddPowerBIDatahubSource>b__0>d.MoveNext()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task`1.TrySetResult(TResult result)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetResult(TResult result)
at Microsoft.PowerBI.Client.Windows.LiveConnectHelpers.PowerBIService.PowerBIServiceConnector.<SelectDatahubArtifactFromPowerBIService>d__13.MoveNext()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task`1.TrySetResult(TResult result)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetResult(TResult result)
at Microsoft.PowerBI.Client.Windows.PowerBIService.Flows.AuthenticatedWebRequestor.<Execute>d__5`1.MoveNext()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Delegate.DynamicInvokeImpl(Object[] args)
at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
at Microsoft.Mashup.Client.UI.Shared.WindowManager.ShowModal[T](T dialog, Func`1 showModalFunction)
at Microsoft.PowerBI.Client.Program.<>c__DisplayClass4_1.<Main>b__3()
at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.<>c__DisplayClass3_0.<HandleExceptionsWithNestedTasks>b__0()
at Microsoft.Mashup.Host.Document.ExceptionHandlerExtensions.HandleExceptions(IExceptionHandler exceptionHandler, Action action)
at Microsoft.PowerBI.Client.Program.Main(String[] args)

PowerBINonFatalError:
{"AppName":"PBIDesktop","AppVersion":"2.111.590.0","ModuleName":"Microsoft.PowerBI.Client.Windows.dll","Component":"Microsoft.PowerBI.Client.Windows.Services.UIBlockingService","Error":"System.ArgumentNullException","MethodDef":"AllowModalDialogs","ErrorOffset":"43"}

Snapshot Trace Logs:
C:\Users\mick.jaeger\Microsoft\Power BI Desktop Store App\FrownSnapShot3e751015-a545-459a-bfb3-0f71e92faa43.zip

Model Default Mode:
Import

Model Version:
PowerBI_V3

Performance Trace Logs:
C:\Users\mick.jaeger\Microsoft\Power BI Desktop Store App\PerformanceTraces.zip

Enabled Preview Features:
PBI_shapeMapVisualEnabled
PBI_azureMapVisual
PBI_compositeModelsOverAS
PBI_enhancedTooltips
PBI_enableWebView2
PBI_sparklines
PBI_scorecardVisual
PBI_fieldParametersSuperSwitch

Disabled Preview Features:
PBI_SpanishLinguisticsEnabled
PBI_qnaLiveConnect
PBI_b2bExternalDatasetSharing
PQ_WebView2Connector
PBI_NlToDax
PBI_horizontalFusion
PBI_optimizeTabRibbon
PBI_relationshipEditPane

Disabled DirectQuery Options:
TreatHanaAsRelationalSource

Cloud:
GlobalCloud

PowerBIUserFeedbackServices_IsReported:
True

Formulas:

section Section1;

shared dateDimension = let
Source = Sql.Database("mbedw01", "mudbayEDW"),
dbo_dateDimension = Source{[Schema="dbo",Item="dateDimension"]}[Data],
#"Changed Type" = Table.TransformColumnTypes(dbo_dateDimension,{{"calendarMonthNumber", Int64.Type}}),
#"Duplicated Column" = Table.DuplicateColumn(#"Changed Type", "calendarYear", "calendarYear - Copy"),
#"Duplicated Column1" = Table.DuplicateColumn(#"Duplicated Column", "calendarMonthNumber", "calendarMonthNumber - Copy"),
#"Merged Columns" = Table.CombineColumns(Table.TransformColumnTypes(#"Duplicated Column1", {{"calendarMonthNumber - Copy", type text}}, "en-US"),{"calendarYear - Copy", "calendarMonthNumber - Copy"},Combiner.CombineTextByDelimiter(":", QuoteStyle.None),"Year:Month")
in
#"Merged Columns";

shared retailSalesFact = let
Source = Sql.Database("mbedw01", "mudbayEDW"),
dbo_retailSalesFact = Source{[Schema="dbo",Item="retailSalesFact"]}[Data],
#"Filtered Rows" = Table.SelectRows(dbo_retailSalesFact, each Date.IsInCurrentYear([saleDate]) or Date.IsInPreviousYear([saleDate]))
in
#"Filtered Rows";

shared storeDimension = let
Source = Sql.Database("mbedw01", "mudbayEDW"),
dbo_storeDimension = Source{[Schema="dbo",Item="storeDimension"]}[Data]
in
dbo_storeDimension;

shared storeBudgetsFact = let
Source = Sql.Database("mbedw01", "mudbayEDW"),
dbo_storeBudgetsFact = Source{[Schema="dbo",Item="storeBudgetsFact"]}[Data],
#"Duplicated Column" = Table.DuplicateColumn(dbo_storeBudgetsFact, "budgetYear", "budgetYear - Copy"),
#"Duplicated Column1" = Table.DuplicateColumn(#"Duplicated Column", "budgetMonth", "budgetMonth - Copy"),
#"Merged Columns" = Table.CombineColumns(Table.TransformColumnTypes(#"Duplicated Column1", {{"budgetMonth - Copy", type text}}, "en-US"),{"budgetYear - Copy", "budgetMonth - Copy"},Combiner.CombineTextByDelimiter(":", QuoteStyle.None),"Year:Month")
in
#"Merged Columns";

[Anonymous]

Hi @mickjaeger ,

In my tests, I can connect to the dataset in power bi normally.So I found the possible cause of the error based on your error message.

As the error message says: "Value cannot be null."

I think you need to make sure that there are no null values involved in your dataset.

There is a post similar to your error that I hope will help you.

Value cannot be null power bi query - Microsoft Power BI Community

Best regards,

Community Support Team Selina zhu

[mickjaeger]

Thanks for the response Selina. 

The NULL values conversation is confusing to me. Of course many SQL tables will have potentially many NULL values and that should be normal and expected behavior. Power BI does weird and unexpected things when NULL values are present. As long as the NULL values adhere to SQL rules then Power BI should be able to import and manage these values as NULLs.

From my end I found I was able to open this Power BI Dataset into a new, blank report. The original error message occured when trying to add this online dataset into an existing Power BI Report. Not sure if that impacted this behavior.

In your opinion, does it matter if I'm creating a new report or editing an existing one? Seems to me that either operation should work.

Thanks again,

Mick