runtime error

eback (most recent call last): File "/home/user/app/app.py", line 22, in <module> cifar_valid = utils.Cifar10SearchDataset('.', train=False, download=True, transform=utils.augmentation_custom_resnet('Valid')) File "/home/user/app/utils.py", line 19, in __init__ super().__init__(root=root, train=train, download=download, transform=transform) File "/home/user/.local/lib/python3.10/site-packages/torchvision/datasets/cifar.py", line 65, in __init__ self.download() File "/home/user/.local/lib/python3.10/site-packages/torchvision/datasets/cifar.py", line 139, in download download_and_extract_archive(self.url, self.root, filename=self.filename, md5=self.tgz_md5) File "/home/user/.local/lib/python3.10/site-packages/torchvision/datasets/utils.py", line 434, in download_and_extract_archive download_url(url, download_root, filename, md5) File "/home/user/.local/lib/python3.10/site-packages/torchvision/datasets/utils.py", line 134, in download_url url = _get_redirect_url(url, max_hops=max_redirect_hops) File "/home/user/.local/lib/python3.10/site-packages/torchvision/datasets/utils.py", line 82, in _get_redirect_url with urllib.request.urlopen(urllib.request.Request(url, headers=headers)) as response: File "/usr/local/lib/python3.10/urllib/request.py", line 216, in urlopen return opener.open(url, data, timeout) File "/usr/local/lib/python3.10/urllib/request.py", line 519, in open response = self._open(req, data) File "/usr/local/lib/python3.10/urllib/request.py", line 536, in _open result = self._call_chain(self.handle_open, protocol, protocol + File "/usr/local/lib/python3.10/urllib/request.py", line 496, in _call_chain result = func(*args) File "/usr/local/lib/python3.10/urllib/request.py", line 1391, in https_open return self.do_open(http.client.HTTPSConnection, req, File "/usr/local/lib/python3.10/urllib/request.py", line 1351, in do_open raise URLError(err) urllib.error.URLError: <urlopen error [Errno -3] Temporary failure in name resolution>

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