runtime error

) File "/home/user/.local/lib/python3.8/site-packages/fastai/data/external.py", line 136, in untar_data return d.get(url, force=force_download, extract_key=c_key) File "/home/user/.local/lib/python3.8/site-packages/fastdownload/core.py", line 117, in get self.download(url, force=force) File "/home/user/.local/lib/python3.8/site-packages/fastdownload/core.py", line 92, in download return download_and_check(url, urldest(url, self.arch_path()), self.module, force) File "/home/user/.local/lib/python3.8/site-packages/fastdownload/core.py", line 61, in download_and_check res = download_url(url, fpath) File "/home/user/.local/lib/python3.8/site-packages/fastdownload/core.py", line 19, in download_url return urlsave(url, dest, reporthook=progress if show_progress else None, timeout=timeout) File "/home/user/.local/lib/python3.8/site-packages/fastcore/net.py", line 184, in urlsave nm,msg = urlretrieve(url, dest, reporthook, headers=headers, timeout=timeout) File "/home/user/.local/lib/python3.8/site-packages/fastcore/net.py", line 149, in urlretrieve with contextlib.closing(urlopen(url, data, headers=headers, timeout=timeout)) as fp: File "/home/user/.local/lib/python3.8/site-packages/fastcore/net.py", line 108, in urlopen try: return urlopener().open(urlwrap(url, data=data, headers=headers), timeout=timeout) File "/usr/local/lib/python3.8/urllib/request.py", line 525, in open response = self._open(req, data) File "/usr/local/lib/python3.8/urllib/request.py", line 542, in _open result = self._call_chain(self.handle_open, protocol, protocol + File "/usr/local/lib/python3.8/urllib/request.py", line 502, in _call_chain result = func(*args) File "/usr/local/lib/python3.8/urllib/request.py", line 1397, in https_open return self.do_open(http.client.HTTPSConnection, req, File "/usr/local/lib/python3.8/urllib/request.py", line 1357, in do_open raise URLError(err) urllib.error.URLError: <urlopen error [Errno -3] Temporary failure in name resolution> █

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