How to use the subfolder instead of the parent folder in imageDataStore ?

I am using ImageDataStore for classifications, However, the imds.Labels of classes is (the source folder), and I am looking to use the subfolder inside it as classes

New RETINA_OCT2020 (the source parent folder ) includes (4 subfolders named ' car, human, dog, tree'). How to change the imds.Lables to the subfolder names instead of the source folder

[KAVITHA R]

use 'Includesubfolder' option

type help in command prompt

[Mohamed Elbeialy]

Its already included. The point is to change imds.lables from the main source folder to the catagrory of 4 subfolders names

[Mohamed Elbeialy]

This is the message that I RECIEVE

Invalid training data. The output size (4) of the last layer does not match the number of classes (1).