pytorch version?

[zihaozhang9]

Traceback (most recent call last):
File "main.py", line 39, in
results = importlib.import_module(opt['metaLearner']).run(opt,data)
File "/home/user/myproject/FewShotLearning/model/lstm/train-lstm.py", line 121, in run
opt['batchSize'][opt['nTrainShot']])
File "/home/user/anaconda3/envs/FewShotLearning/lib/python2.7/site-packages/torch/nn/modules/module.py", line 489, in call
result = self.forward(*input, **kwargs)
File "/home/user/myproject/FewShotLearning/model/lstm/metaLearner.py", line 145, in forward
self.lstm2_fS_iS_cS_deltaS)
File "/home/user/anaconda3/envs/FewShotLearning/lib/python2.7/site-packages/torch/nn/modules/module.py", line 489, in call
result = self.forward(*input, **kwargs)
File "/home/user/myproject/FewShotLearning/model/lstm/metalstm.py", line 166, in forward
fS_n = torch.stack(fS_n, 0)
TypeError: stack(): argument 'tensors' (position 1) must be tuple of Tensors, not Tensor