Traceback (most recent call last):


 "C:\U2\udemy-dl.py", line 894, in <module>

main()


 "C:\U2\udemy-dl.py", line 799, in main

udemy.ExtractAndDownload()


 "C:\U2\udemy-dl.py", line 281, in ExtractAndDownload

self.login()


 "C:\U2\udemy-dl.py", line 40, in login

extract_info.login(self.username, self.password)


 "C:\U2\udemy\_extractor.py", line 101, in login

csrf_token = self._get_csrf_token()


 "C:\U2\udemy\_extractor.py", line 72, in _get_csrf_token

return match.group(1)
AttributeError: 'NoneType' object has no attribute 'group'

Traceback (most recent call last):


 "train.py", line 180, in <module>

trainer.training(epoch)


 "train.py", line 110, in training

outputs = self.model(image)


 "/home/wuwenfu/.conda/envs/pytorch/lib/python3.7/site-packages/torch/nn/modules/module.py", line 493, in __call__

result = self.forward(*input, **kwargs)


 "/home/wuwenfu/.conda/envs/pytorch/lib/python3.7/site-packages/torch/nn/parallel/data_parallel.py", line 150, in forward

return self.module(*inputs[0], **kwargs[0])


 "/home/wuwenfu/.conda/envs/pytorch/lib/python3.7/site-packages/torch/nn/modules/module.py", line 493, in __call__

result = self.forward(*input, **kwargs)


 "../../encoding/models/deeplabv3.py", line 22, in forward

_, _, c3, c4 = self.base_forward(x)


 "../../encoding/models/base.py", line 55, in base_forward

x = self.pretrained.conv1(x)


 "/home/wuwenfu/.conda/envs/pytorch/lib/python3.7/site-packages/torch/nn/modules/module.py", line 493, in __call__

result = self.forward(*input, **kwargs)


 "/home/wuwenfu/.conda/envs/pytorch/lib/python3.7/site-packages/torch/nn/modules/container.py", line 92, in forward

input = module(input)


 "/home/wuwenfu/.conda/envs/pytorch/lib/python3.7/site-packages/torch/nn/modules/module.py", line 493, in __call__

result = self.forward(*input, **kwargs)


 "../../encoding/nn/syncbn.py", line 58, in forward

mean, inv_std = self._slave_pipe.run_slave(_ChildMessage(xsum, xsqsum, N))
AttributeError: 'NoneType' object has no attribute 'run_slave'
