runtime error

) File "/usr/local/lib/python3.8/http/client.py", line 951, in send self.connect() File "/usr/local/lib/python3.8/http/client.py", line 1418, in connect super().connect() File "/usr/local/lib/python3.8/http/client.py", line 922, in connect self.sock = self._create_connection( File "/usr/local/lib/python3.8/socket.py", line 787, in create_connection for res in getaddrinfo(host, port, 0, SOCK_STREAM): File "/usr/local/lib/python3.8/socket.py", line 918, in getaddrinfo for res in _socket.getaddrinfo(host, port, family, type, proto, flags): socket.gaierror: [Errno -3] Temporary failure in name resolution During handling of the above exception, another exception occurred: Traceback (most recent call last): File "app.py", line 72, in <module> detection_model = load_model() File "app.py", line 31, in load_model wget.download("https://nyp-aicourse.s3-ap-southeast-1.amazonaws.com/pretrained-models/balloon_model.tar.gz") File "/home/user/.local/lib/python3.8/site-packages/wget.py", line 526, in download (tmpfile, headers) = ulib.urlretrieve(binurl, tmpfile, callback) File "/usr/local/lib/python3.8/urllib/request.py", line 247, in urlretrieve with contextlib.closing(urlopen(url, data)) as fp: File "/usr/local/lib/python3.8/urllib/request.py", line 222, in urlopen return opener.open(url, data, 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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