Hello @Swapneel_Bhatt ,
I have reciprocated with your updated notebook from my end. Following the linked solution, your code is now okay for the function : def create_train_val_dirs(root_path). But still test cases fail.
And not only the first one, for all functions your test cases are failing.
I had solved a similar case before.
See this thread:
All functions have incorrect type (Nonetype)
Now, try once getting a fresh copy of notebook from the course and write the functions again.
With regards,
Nilosree Sengupta