About unknown error

[LindaWeijiaSun]

Hi,
Thanks for your time!

I tried the "training" part command: python train.py --dataroot ./facades/train512 --valDataroot ./facades/test512 --exp ./checkpoints_new --netG ./demo_model/netG_epoch_8.pth
But I got the unknown error, the screenshot of the traceback is shown below:

Please notice the last line of the screenshot: RuntimeError: Unknown error -1
What is the reason of this unknown error? Where should I make any change?
I am using pytorch 0.4, and some codes are modified according to the 0.4 version. And I use part of the training set providing on google drive, not all the set, due to the memory of disk.

Really thanks for any help!

[hezhangsprinter]

I am not sure exactly since I am not using pytroch0.4. I am using 0.3x for this code.