at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
at System.Collections.Generic.List1.get_Item(Int32 index) at System.Linq.Enumerable.ElementAt[TSource](IEnumerable1 source, Int32 index)
at Microsoft.ML.AutoML.CrossValSummaryRunner1.Run(SuggestedPipeline pipeline, DirectoryInfo modelDirectory, Int32 iterationNum) at Microsoft.ML.AutoML.Experiment2.Execute()
at Microsoft.ML.AutoML.ExperimentBase2.Execute(ColumnInformation columnInfo, DatasetColumnInfo[] columns, IEstimator1 preFeaturizer, IProgress1 progressHandler, IRunner1 runner)
at Microsoft.ML.AutoML.ExperimentBase2.ExecuteCrossValSummary(IDataView[] trainDatasets, ColumnInformation columnInfo, IDataView[] validationDatasets, IEstimator1 preFeaturizer, IProgress1 progressHandler) at Microsoft.ML.AutoML.ExperimentBase2.Execute(IDataView trainData, ColumnInformation columnInformation, IEstimator1 preFeaturizer, IProgress1 progressHandler)
at Microsoft.ML.ModelBuilder.AutoMLService.Experiments.AutoMLExperiment3.<>c__DisplayClass21_0.<ExecuteAsync>b__5() in /_/src/Microsoft.ML.ModelBuilder.AutoMLService/Experiments/AutoMLExperiment.cs:line 81 at System.Threading.Tasks.Task1.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.ML.ModelBuilder.AutoMLService.Experiments.AutoMLExperiment`3.d__21.MoveNext() in //src/Microsoft.ML.ModelBuilder.AutoMLService/Experiments/AutoMLExperiment.cs:line 108
--- 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.ML.ModelBuilder.AutoMLEngine.d__30.MoveNext() in //src/Microsoft.ML.ModelBuilder.AutoMLService/AutoMLEngineService/AutoMLEngine.cs:line 147