All datasets started throwing error Value cannot be null. Parameter name: key

[katiekalk2]

Sometime this afternoon all of my datasets return an error message when trying to change anything.  I was in all three pbix files this morning and they worked fine.  I have three days worth of work that I will have to rebuild if I cannot get past this error.  

Feedback Type:
Frown (Error)

Timestamp:
2024-08-02T04:40:44.1136803Z

Local Time:
2024-08-01T23:40:44.1136803-05:00

Session ID:
317ce034-0c14-4bd9-bda0-54e6a100c8df

Release:
July 2024

Product Version:
2.131.1203.0 (24.07) (x64)

Stack Trace:
System.ArgumentNullException
at System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
at Microsoft.PowerBI.Modeling.Engine.Loader.NameCalculation.FinalNameCalculator.Calculate(IList`1 itemInfos, FinalNameResults previousResults)
at Microsoft.PowerBI.Modeling.Engine.Loader.PowerQueryToModelSchemaSynchronizer.CalculateTableItemFinalNamesAndRewriteAllLoadInputNames(IEnumerable`1 tableInputsThatCanBeRenamed, FinalNameResults queryableObjectFinalNames)
at Microsoft.PowerBI.Modeling.Engine.Loader.PowerQueryToModelSchemaSynchronizer.ApplyQuerySchemaToModel(IModelInput modelInput, IExtendedModelChangeScope modelChangeScope, Boolean requireFullDataRefresh)
at Microsoft.PowerBI.Client.Windows.Modeling.Hosting.ModelingTelemetryService.<>c__DisplayClass13_0`1.<RunInCertifiedReportingActivity>b__0()
at Microsoft.PowerBI.Client.Windows.Modeling.Hosting.ModelingTelemetryService.RunInCertifiedReportingActivity(String featureName, String activityName, Action action, IReadOnlyDictionary`2 activityAttributes)
at Microsoft.PowerBI.Client.Windows.Modeling.Hosting.ModelingTelemetryService.RunInCertifiedReportingActivity[T](String featureName, String activityName, Func`1 action, IReadOnlyDictionary`2 activityAttributes)
at Microsoft.PowerBI.Modeling.Engine.Loader.PowerQueryToModelLoader.ApplyQueriesToModel(IExtendedModelChangeScope modelChangeScope, ModelSchemaSyncContext modelSchemaSyncContext, DataModelSnapshot preTransactionModelSnapshot, Boolean& runRelationshipDetection, List`1& newTableColumnPairs, HashSet`1& existingTableInputs, Boolean& upgradedModel, V3UpgradeStatus& v3UpgradeStatus, List`1& tableInputsExcludedFromSync)
at Microsoft.PowerBI.Modeling.Engine.Loader.PowerQueryToModelLoader.<>c__DisplayClass26_0.<ApplyQueryChangesAndCreateRelationships>b__1()
at Microsoft.PowerBI.Modeling.Engine.Loader.PowerQueryToModelLoader.ExecuteInTransaction(IExtendedModelChangeScope modelChangeScope, Func`1 action)
at Microsoft.PowerBI.Modeling.Engine.Loader.PowerQueryToModelLoader.ApplyQueryChangesAndCreateRelationships(IRelationshipLoader relationshipLoader, IExtendedModelChangeScope modelChangeScope, ModelSchemaSyncContext modelSchemaSyncContext)
at Microsoft.PowerBI.Modeling.Engine.Loader.PowerQueryToModelLoader.ProcessLoadInputs(IRelationshipLoader relationshipLoader, IExtendedModelChangeScope modelChangeScope, ModelSchemaSyncContext modelSchemaSyncContext)
at Microsoft.PowerBI.Modeling.Engine.Loader.PowerQueryToModelLoader.<>c__DisplayClass21_0.<PerformLoadAsync>b__3()
at System.Threading.Tasks.Task`1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
--- 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.Modeling.Hosting.ModelingTelemetryService.<>c__DisplayClass11_0`1.<<RunInAsyncActivity>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.Modeling.Hosting.ModelingTelemetryService.<RunInAsyncActivity>d__10.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.Modeling.Hosting.ModelingTelemetryService.<RunInAsyncActivity>d__11`1.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.Modeling.Engine.Loader.LoadToReportFlow.<PerformLoadToAnalysisServices>d__18.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.Modeling.Engine.Loader.LoadToReportFlow.<ExecuteInternal>d__13.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.Modeling.Engine.Loader.LoadToReportFlow.<Execute>d__12.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.Modeling.Engine.ModelingEngine.<LoadModelAsyncInternal>d__10.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.Modeling.Hosting.ModelingTelemetryService.<>c__DisplayClass11_0`1.<<RunInAsyncActivity>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.Modeling.Hosting.ModelingTelemetryService.<RunInAsyncActivity>d__10.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.Modeling.Hosting.ModelingTelemetryService.<RunInAsyncActivity>d__11`1.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.Modeling.Hosting.DesktopModelingHost.<>c__DisplayClass17_0.<<LoadToModel>b__2>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.Modeling.Engine.Authoring.AsyncModelAuthoringService.<>c__DisplayClass10_0.<<RunExtendedModelChangeAsync>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.Modeling.Engine.Authoring.AsyncModelAuthoringService.<ContinueWithAsyncOperation>d__13.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.Modeling.Hosting.DesktopModelingHost.<LoadToModel>d__17.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.FloatingDialog.KoLoadToReportDialog.<>c__DisplayClass37_0.<<StartLoadToReportFlow>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()

PowerBINonFatalError:
{"AppName":"PBIDesktop","AppVersion":"2.131.1203.0","ModuleName":"Microsoft.PowerBI.Modeling.Engine.dll","Component":"Microsoft.PowerBI.Modeling.Engine.Loader.NameCalculation.FinalNameCalculator","Error":"System.ArgumentNullException","MethodDef":"Calculate","ErrorOffset":"315","ErrorCode":""}

OS Version:
Microsoft Windows NT 10.0.22621.0 (x64 en-US)

CLR Version:
4.8 or later [Release Number = 533320]

Peak Virtual Memory:
71.2 GB

Private Memory:
918 MB

Peak Working Set:
1.21 GB

IE Version:
11.1.22621.0

User ID:
16e11a69-1230-4379-8825-dfc2cbdb91b9

Workbook Package Info:
1* - en-US, Query Groups: 12, fastCombine: Disabled, runBackgroundAnalysis: False.

Telemetry Enabled:
True

Model Default Mode:
Composite

Model Version:
PowerBI_V3

Enabled Preview Features:
PBI_enhancedTooltips
PBI_sparklines
PBI_scorecardVisual
PBI_NlToDax
PBI_fieldParametersSuperSwitch
PBI_onObject
PBI_setLabelOnExportPdf
PBI_dynamicFormatString
PBI_oneDriveSave
PBI_oneDriveShare
PBI_useModernPublishDialogs
PBI_gitIntegration
PBI_newCard
PBI_buttonSlicerAuthoring
PBI_EimLessElevatedUser
PBI_mobileAutoReportLayout
PBI_daxInlineCopilot
PBI_aiNarrativesVisual
PBI_generateMeasureDescriptionsButton
PBI_desktopReportAuthoringCopilot

Disabled Preview Features:
PBI_shapeMapVisualEnabled
PBI_SpanishLinguisticsEnabled
PBI_qnaLiveConnect
PBI_b2bExternalDatasetSharing
PBI_publishDialogsSupportSubfolders
PBI_tmdlInDataset
PBI_enhancedReportFormat
PBI_qnaImproveLsdlCopilot
PBI_visualCalculationsAuthoring

Disabled DirectQuery Options:
TreatHanaAsRelationalSource

Cloud:
GlobalCloud

DPI Scale:
175%

Supported Services:
Power BI

[v-xiaoyan-msft]

Hi @katiekalk2 ,

We see your reference to "All datasets started throwing error", does this issue occur for all your reports? Please try to clear the existing permission in Power BI Desktop and retry.
If this doesn't work, try uninstalling the existing version and reinstalling Power BI Desktop to see if that helps!

Best regards.
Community Support Team_Caitlyn

[Arthemis_Runner]

Good day,

I am experiencing the same issue. This time it is just within one specific report. I am unable to add a new data source or change the current data sources. I get the error: "value cannot be null. Parameter name: key"

Power BI Version: 2.132.1053.0 64-bit

Troubleshooting attempts:

- Cleared all permissions

- Signed out and signed back in

- Uninstall and reinstall PBI version

User Story:

- Open pbix file in power bi desktop

- Click transform data and select Data Source Settings

- Select required data source and click change data source

- double click replacement semantic model.

- Select required tables and click create

- Error is thrown while data is trying to load.