I have a training error when trying to retrain an AlexNet on my dataset. I can get the data to work when using a small amount such as 10 images but when I try to use approx 500 in each of the 2 classes it states "Training failed. Augnmented Image Datastore cannot form MiniBatches of data because input images differ in 3rd dimension. Consider using 'ColorPreprocessing option to ensure all augmented images have same number of channels"
Can anyone help please?