I got this error when I was training the model. It should have gone wrong here, prop_ The dimension of type should be 3, but the output is 2. I don't understand why this is so **“prop_ type_ var: tensor([[0, 1, 1, 1, 1, 1, 1, 2]])”** Maybe it has something to do with the size of my picture? My picture size is 340 * 256 Please help me!!!thank you!