Method not found: 'Tensorflow.Tensor Tensorflow.tensorflow.truncated_normal

Getting below error message while Training the Images using ImageClassification

System.MissingMethodException
HResult=0x80131513
Message=Method not found: 'Tensorflow.Tensor Tensorflow.tensorflow.truncated_normal(Int32, Single, Single, Tensorflow.TF_DataType, System.Nullable1<Int32>, System.String)'. Source=Microsoft.ML.Vision StackTrace: at Microsoft.ML.Vision.ImageClassificationTrainer.<>c__DisplayClass64_1.<AddFinalRetrainOps>b__4(NameScope <p0>) at Tensorflow.Binding.tf_with[T](T py, Action1 action)
at Microsoft.ML.Vision.ImageClassificationTrainer.<>c__DisplayClass64_0.b__1(NameScope scope)
at Tensorflow.Binding.tf_with[T](T py, Action1 action) at Microsoft.ML.Vision.ImageClassificationTrainer.AddFinalRetrainOps(Int32 classCount, String labelColumn, String scoreColumnName, Tensor bottleneckTensor, Boolean isTraining, Boolean useLearningRateScheduler, Single learningRate) at Microsoft.ML.Vision.ImageClassificationTrainer.AddTransferLearningLayer(String labelColumn, String scoreColumnName, Single learningRate, Boolean useLearningRateScheduling, Int32 classCount) at Microsoft.ML.Vision.ImageClassificationTrainer.InitializeTrainingGraph(IDataView input) at Microsoft.ML.Vision.ImageClassificationTrainer.TrainModelCore(TrainContext trainContext) at Microsoft.ML.Trainers.TrainerEstimatorBase2.TrainTransformer(IDataView trainSet, IDataView validationSet, IPredictor initPredictor)
at Microsoft.ML.Data.EstimatorChain`1.Fit(IDataView input)
at VWS.ML.API.VWSTrainObjectDetectionAdvancedOptions.CreateImagepipeline() in G:\Automation\3.Projects\VS 2017\Utility\VWSMLStudio\VWS.ML.API\VWSImageClassification.cs:line 377
at VWS.ML.API.VWSImageClassification.TrainData(IDataView loadImageData1, String GetInputPath, String GetModelPath, String FeatureColumnName, String ScoreColumnName, String PredictedLabelColumnName, String LabelColumnName) in G:\Automation\3.Projects\VS 2017\Utility\VWSMLStudio\VWS.ML.API\VWSImageClassification.cs:line 702
at ConsoleML.Program.Main(String args) in G:\Automation\3.Projects\VS 2017\Utility\VWSMLStudio\ConsoleML\Program.cs:line 20