could not work on cuda

[MahmoodSpewAfsh]

Hi, I wanted to run the code on cuda but I get the error :
--> 114 torch.eq(
115 energies,
116 self.energies,

RuntimeError: Expected all tensors to be on the same device, but found at least two devices, cuda:0 and cpu!

which is in the stop_window file, how can I fix that?