RuntimeError stack expects each tensor to be equal size but got 5 34 at entry 0 and 4 34 at entry 4用英文回答

The error message "RuntimeError: stack expects each tensor to be equal size, but got [5, 34] at entry 0 and [4, 34] at entry 4" indicates that there are two tensors with different sizes being stacked together. Specifically, the first tensor has a shape of [5, 34] and the fourth tensor has a shape of [4, 34]. This is not allowed because PyTorch's stack operation requires all tensors to have the same size along the specified dimension.