Hey!
I recently started with Pytorch and right now I am facing a problem with computing the gradients.
I have a list of Tensors (L) with required_grad = True, that is stucked in one Tensor: T=torch.stack(L,dim=0).
So, when I am trying to compute the gradients from all elements from the Tensor T with out.backward() , T[0].grad is always None.
How can I get the gradients in this case?