How to use ImageDataBunch.from_csv()


Could anyone tell me how to use ImageDataBunch.from_csv() method? I have images in csv file format with all 784 pixel value in each row. The training and testing image files are kept under /content/train an /content/test folders and also labels file kept in /content/ folder. But I am getting error that file not found. In the documentation it says that organize files in
I am confused, can I not use /content/train and /content/test folder structure as it is where files are stored loading in colab notebook?