RuntimeError: Traceback (most recent call last):
File "G:\anaconda\lib\site-packages\torch\utils\data\dataloader.py", line 138, in _worker_loop
samples = collate_fn([dataset[i] for i in batch_indices])
File "G:\anaconda\lib\site-packages\torch\utils\data\dataloader.py", line 138, in <listcomp>
samples = collate_fn([dataset[i] for i in batch_indices])
File "G:\anaconda\lib\site-packages\torchvision\datasets\mnist.py", line 95, in __getitem__
img = self.transform(img)
File "G:\anaconda\lib\site-packages\torchvision\transforms\transforms.py", line 60, in __call__
img = t(img)
File "G:\anaconda\lib\site-packages\torchvision\transforms\transforms.py", line 163, in __call__
return F.normalize(tensor, self.mean, self.std, self.inplace)
File "G:\anaconda\lib\site-packages\torchvision\transforms\functional.py", line 208, in normalize
tensor.sub_(mean[:, None, None]).div_(std[:, None, None])
RuntimeError: output with shape [1, 28, 28] doesn't match the broadcast shape [3, 28, 28]
请问这个问题要怎么解决啊？
这些文件都是安装包自带的，我也没改过啊x