Some error after training for 6 Epoches.

[Yash-099]

I am getting some error after the model finished training for 6 epoches.
the error is as follows-

Traceback (most recent call last):
File "train.py", line 20, in
tfnet.train()
File "/home/yash/anaconda3/lib/python3.6/site-packages/darkflow/net/flow.py", line 72, in train
if not ckpt: _save_ckpt(self, *args)
File "/home/yash/anaconda3/lib/python3.6/site-packages/darkflow/net/flow.py", line 23, in _save_ckpt
with open(profile, 'wb') as profile_ckpt:
FileNotFoundError: [Errno 2] No such file or directory: './ckpt/yolo_custom-500.profile'

I guess that this error is due to broken wieght file. But i have downloaded the same weight file which you have specified in your .ipynb file the yolov2.weights. Can you suggest some solution for this?
Thanks.