So, I have downloaded a file that has all the images. I am doing my coding in Colab, so you know I have to upload the pictures in GDrive. I have 10,000 images of each class of 4 classes, means total 40,000 images, right? Now I have created four folders, as we are calling this classes in GDrive and uploaded 1000 images in each class as train set. Got it? Then uploaded 8 images in valid sets. Now doing this multi class stuff. Got it now bro?