Im getting error called FileNotFoundError: [Errno 2] No such file or directory: 'data/obj'

[Shaminda97]

/content/darknet
Traceback (most recent call last):
File "List_Training_files.py", line 4, in
os.chdir(os.path.join("data", "obj"))
FileNotFoundError: [Errno 2] No such file or directory: 'data/obj'
could you please help me to fix this?