Classify requires at least 3 arguments

Hi, I am having trouble when trying to use the "classify" function to evaluate the performance of my neural network.   I am using the following code:     net = load('mynet.mat'); %this returns my previsouly trained SeriesNetwork object test_folder = './test_data'; test_images = imageDatastore(test_folder,'FileExtensions','.jpg'); [Y,scores] = classify(net,test_images); But the classify function throws me an error that it requires at least 3 arguments, which means it is trying to use the classify function from the statistics package.   What can I make do force the use of the classify from the  deep learning package?