Traceback (most recent call last):


 "/Library/Frameworks/Python.framework/Versions/3.7/bin/coursera-dl", line 10, in <module>

sys.exit(main())


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/coursera/coursera_dl.py", line 236, in main

login(session, args.username, args.password)


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/coursera/cookies.py", line 155, in login

raise AuthenticationFailed('Cannot login on coursera.org: %s' % e)
coursera.cookies.AuthenticationFailed: Cannot login on coursera.org: 400 Client Error: Bad Request for url: https://api.coursera.org/api/login/v3

Traceback (most recent call last):


 "train.py", line 160, in <module>

batch_size=8,


 "/home/ubuntu/PyTorch-YOLOv3/test.py", line 54, in evaluate

true_positives, pred_scores, pred_labels = [np.concatenate(x, 0) for x in list(zip(*sample_metrics))]
ValueError: not enough values to unpack (expected 3, got 0)
