Error while testing the data using classficationLearner tool

When I try to test the trained classificationLearner, I get the following error:

Error using subsref

No appropriate method, property, or field 'predictFcn' for class 'ClassificationSVM'.

Error in classreg.learning.internal.DisallowVectorOps/subsref (line 21)

[varargout{1:nargout}] = builtin('subsref',this,s);

Error in RSM_NNdata (line 2)

yfit = trainedClassifier_SVM.predictFcn(x);