RuntimeError: DataLoader worker (pid 16126) exited unexpectedly with exit code 1

[Kyle0936]

Sorry to bother you but I had another issue when I tried to train with my own data sets:
python main.py --mode='train' --train_path='data/images' --label_path='data/ground_truth_mask' --batch_size=8 --visdom=False

It seemed to run correctly as first, but then came the error:

......
The number of parameters: 62238175
/Users/kyle/Documents/MATLAB/DSS-py/solver.py:138: UserWarning: torch.nn.utils.clip_grad_norm is now deprecated in favor of torch.nn.utils.clip_grad_norm_.
utils.clip_grad_norm(self.net.parameters(), self.config.clip_gradient)
/Users/kyle/Documents/MATLAB/DSS-py/solver.py:141: UserWarning: invalid index of a 0-dim tensor. This will be an error in PyTorch 0.5. Use tensor.item() to convert a 0-dim tensor to a Python number
loss_epoch += loss.cpu().data[0]
/Users/kyle/Documents/MATLAB/DSS-py/solver.py:143: UserWarning: invalid index of a 0-dim tensor. This will be an error in PyTorch 0.5. Use tensor.item() to convert a 0-dim tensor to a Python number
epoch, self.config.epoch, i, iter_num, loss.cpu().data[0]))
epoch: [0/500], iter: [0/3], loss: [4.8447]
/Users/kyle/Documents/MATLAB/DSS-py/solver.py:145: UserWarning: invalid index of a 0-dim tensor. This will be an error in PyTorch 0.5. Use tensor.item() to convert a 0-dim tensor to a Python number
error = OrderedDict([('loss:', loss.cpu().data[0])])
epoch: [0/500], iter: [1/3], loss: [4.8428]
epoch: [0/500], iter: [2/3], loss: [4.8411]
thread_monitor No such process in pthread_detach
Traceback (most recent call last):
File "main.py", line 86, in
main(config)
File "main.py", line 25, in main
train.train()
File "/Users/kyle/Documents/MATLAB/DSS-py/solver.py", line 127, in train
for i, data_batch in enumerate(self.train_loader):
File "/Users/kyle/anaconda3/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 280, in next
idx, batch = self._get_batch()
File "/Users/kyle/anaconda3/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 259, in _get_batch
return self.data_queue.get()
File "/Users/kyle/anaconda3/lib/python3.6/multiprocessing/queues.py", line 335, in get
res = self._reader.recv_bytes()
File "/Users/kyle/anaconda3/lib/python3.6/multiprocessing/connection.py", line 216, in recv_bytes
buf = self._recv_bytes(maxlength)
File "/Users/kyle/anaconda3/lib/python3.6/multiprocessing/connection.py", line 407, in _recv_bytes
buf = self._recv(4)
File "/Users/kyle/anaconda3/lib/python3.6/multiprocessing/connection.py", line 379, in _recv
chunk = read(handle, remaining)
File "/Users/kyle/anaconda3/lib/python3.6/site-packages/torch/utils/data/dataloader.py", line 178, in handler
_error_if_any_worker_fails()
RuntimeError: DataLoader worker (pid 16126) exited unexpectedly with exit code 1.

I really appreciate your generous help!

[AceCoooool]

please check your own image and label directory：is there are some "not picture" file in this directory （I try the training in my computer, without the error you meet.）

[Kyle0936]

Here are my image set and ground truth set. I also have used "ls -a" to check and have removed '.DS_Store'. The only not picture files left are '.' and '..', which clearly should not be deleted. Are there any requirements for the names or forms of images?