I am getting the follow error in an iron python code, has anyone come across such an error?

Traceback (most recent call last):
  File "Spotfire.Dxp.Data", line unknown, in OpenJob
  File "Spotfire.Dxp.Services", line unknown, in OpenJob
  File "Spotfire.Dxp.Services", line unknown, in InvokeService
  File "Spotfire.Dxp.Data", line unknown, in ExecuteQueryCore2
  File "Spotfire.Dxp.Data", line unknown, in ExecuteInformationLink
  File "Spotfire.Dxp.Data", line unknown, in <ExecuteInformationLink>b__7
  File "Spotfire.Dxp.Data", line unknown, in OpenJob
  File "Spotfire.Dxp.Application.ScriptSupport", line unknown, in ExecuteForDebugging
  File "", line unknown, in <module>
  File "Spotfire.Dxp.Data", line unknown, in ReplaceData
  File "Spotfire.Dxp.Framework", line unknown, in Transaction
  File "Spotfire.Dxp.Framework", line unknown, in Transaction
  File "Spotfire.Dxp.Data", line unknown, in <ReplaceData>b__3d
  File "Spotfire.Dxp.Framework", line unknown, in InternalTransaction
  File "Spotfire.Dxp.Data", line unknown, in <ReplaceData>b__3e
  File "Spotfire.Dxp.Framework", line unknown, in InternalTransaction
  File "Spotfire.Dxp.Framework", line unknown, in <Add>b__0
  File "Spotfire.Dxp.Framework", line unknown, in Spotfire.Dxp.Framework.DocumentModel.IUndoableNode.AttachItemToUndoableNode
  File "Spotfire.Dxp.Framework", line unknown, in AttachSubTreeWhileExecuting
  File "Spotfire.Dxp.Framework", line unknown, in ConfigureAndAttachFromNew
  File "Spotfire.Dxp.Framework", line unknown, in ExecuteSubtask
  File "Spotfire.Dxp.Framework", line unknown, in ConfigureSubTree
  File "Spotfire.Dxp.Data", line unknown, in OnConfigure
  File "Spotfire.Dxp.Data", line unknown, in MoveNext
  File "Spotfire.Dxp.Data", line unknown, in Update
  File "Spotfire.Dxp.Data", line unknown, in PerformUpdate
  File "Spotfire.Dxp.Data", line unknown, in GetColumnsAndProperties
  File "Spotfire.Dxp.Data", line unknown, in CreateView
  File "Spotfire.Dxp.Framework", line unknown, in ExecuteSubtask
  File "Spotfire.Dxp.Data", line unknown, in <CreateView>b__24
  File "Spotfire.Dxp.Data", line unknown, in ExecuteQuery2
  File "Spotfire.Dxp.Data", line unknown, in ExecuteQueryCore2
  File "Spotfire.Dxp.Data", line unknown, in Execute
  File "Spotfire.Dxp.Data", line unknown, in ExecuteQuery2
  File "Spotfire.Dxp.Data", line unknown, in ExecuteQueryCore2
Exception: Failed to execute data query

Spotfire.Dxp.Data.Exceptions.ImportException: Failed to execute data query ---> Spotfire.Dxp.Data.Exceptions.InformationModelException: Error(s) found during validation. ---> Spotfire.Dxp.Services.Data.InformationModel.InformationModelServiceException: Error(s) found during validation.
   at Spotfire.Dxp.Services.WebServiceBase`1.InvokeService[T](ServiceMethod`1 serviceMethod, ExceptionFactoryMethod exceptionFactoryMethod)
   at Spotfire.Dxp.Services.Data.InformationModel.QueryManagerService.OpenJob(JobConfiguration configuration, InformationLink informationLink, Parameter[] parameters)
   at Spotfire.Dxp.Data.InformationModel.InternalInformationModelManager.OpenJob(InformationLinkElement informationLink, IList`1 parameters, Boolean isReferenced)
   --- End of inner exception stack trace ---
   at Spotfire.Dxp.Data.InformationModel.InternalInformationModelManager.OpenJob(InformationLinkElement informationLink, IList`1 parameters, Boolean isReferenced)
   at Spotfire.Dxp.Data.InformationModel.InternalInformationModelManager.<>c__DisplayClass8.<ExecuteInformationLink>b__7()
   at Spotfire.Dxp.Data.InformationModel.InternalInformationModelManager.ExecuteInformationLink(InformationLinkElement informationLink, IList`1 parameters, Boolean isReferenced)
   at Spotfire.Dxp.Data.Import.InformationLinkDataSourceConnection.ExecuteQueryCore2()
   --- End of inner exception stack trace ---
   at Spotfire.Dxp.Data.Import.InformationLinkDataSourceConnection.ExecuteQueryCore2()
   at Spotfire.Dxp.Data.DataSourceConnection.ExecuteQuery2()
   at Spotfire.Dxp.Data.DataFlow.Execute()
   at Spotfire.Dxp.Data.DataFlow.DataFlowConnection.ExecuteQueryCore2()
   at Spotfire.Dxp.Data.DataSourceConnection.ExecuteQuery2()
   at Spotfire.Dxp.Data.Producers.SourceColumnProducer.<>c__DisplayClass27.<CreateView>b__24()
   at Spotfire.Dxp.Framework.ApplicationModel.Progress.ExecuteSubtask(String title, ProgressOperation operation)
   at Spotfire.Dxp.Data.Producers.SourceColumnProducer.CreateView(CxxSession session, DataPropertyRegistry propertyRegistry, GlobalMethodRegistry globalMethodRegistry, DataSourceConnection connection, PartialDataLoadReport& partialLoadReport)
   at Spotfire.Dxp.Data.Producers.SourceColumnProducer.GetColumnsAndProperties(DataSourceConnection connection)
   at Spotfire.Dxp.Data.Persistence.DataItem.PerformUpdate(SourceColumnProducer producer, DataSourceConnection connection)
   at Spotfire.Dxp.Data.Persistence.DataItem.Update(SourceColumnProducer producer, DataSourceConnection connection)
   at Spotfire.Dxp.Data.Persistence.DataPool.<LoadData>d__2.MoveNext()
   at Spotfire.Dxp.Data.Producers.SourceColumnProducer.OnConfigure()
   at Spotfire.Dxp.Framework.DocumentModel.Node.ConfigureSubTree()
   at Spotfire.Dxp.Framework.ApplicationModel.Progress.ExecuteSubtask(String title, IndeterminateProgressFormatter progressFormatter, ProgressOperation operation)
   at Spotfire.Dxp.Framework.DocumentModel.DocumentNode.ConfigureAndAttachFromNew()
   at Spotfire.Dxp.Framework.DocumentModel.DocumentNode.AttachSubTreeWhileExecuting(UndoableNodeBase newOwner)
   at Spotfire.Dxp.Framework.DocumentModel.UndoableNode.Spotfire.Dxp.Framework.DocumentModel.IUndoableNode.AttachItemToUndoableNode(Object item)
   at Spotfire.Dxp.Framework.DocumentModel.UndoableList`1.<>c__DisplayClass1.<Add>b__0()
   at Spotfire.Dxp.Framework.DocumentModel.Node.InternalTransaction(Executor executor, Boolean rollbackNestedInternalTransactionAtException)
   at Spotfire.Dxp.Data.DataTable.<>c__DisplayClass40.<ReplaceData>b__3e()
   at Spotfire.Dxp.Framework.DocumentModel.Node.InternalTransaction(Executor executor, Boolean rollbackNestedInternalTransactionAtException)
   at Spotfire.Dxp.Data.DataTable.<>c__DisplayClass40.<ReplaceData>b__3d()
   at Spotfire.Dxp.Framework.Commands.CommandHistory.Transaction(Executor executor, Boolean visible, Boolean sticky, Guid stickyGuid)
   at Spotfire.Dxp.Framework.Commands.CommandHistory.Transaction(String displayName, Executor executor)
   at Spotfire.Dxp.Data.DataTable.ReplaceData(DataColumnProducer producer)
   at _stub_$746##746(Closure , CallSite , CodeContext , Object , Object )
   at Microsoft.Scripting.Actions.MatchCaller.Call3[T0,T1,T2,TRet](Func`5 target, CallSite site, Object[] args)
   at Microsoft.Scripting.Actions.CallSite`1.UpdateAndExecute(Object[] args)
   at Microsoft.Scripting.Actions.UpdateDelegates.Update3[T,T0,T1,T2,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2)
   at <module>$710##710(Closure , Scope , LanguageContext )
   at Microsoft.Scripting.SourceUnit.Execute(Scope scope, ErrorSink errorSink)
   at Spotfire.Dxp.Application.ScriptSupport.IronPythonScriptEngine.ExecuteForDebugging(String scriptCode, Dictionary`2 scope, Stream outputStream)

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