ModuleNotFoundError: No module named 'lib.data'

[filzahamjad]

when i run the following command:
python tools/train_net.py --config ./config/openworld-nodef.yaml

i get this error:
Traceback (most recent call last):
File "tools/train_net.py", line 8, in
from lib.data.build import make_dataloader
ModuleNotFoundError: No module named 'lib.data'