S3cmd: 2.0.1
python: 3.6.5 (default, Apr 14 2018, 13:17:30)
[GCC 7.3.1 20180406]
environment LANG=en_US.UTF-8

Traceback (most recent call last):
File "/usr/bin/s3cmd", line 1316, in _download
response = s3.object_get(uri, dst_stream, dst_file, extra_label = seq_label)
File "/usr/lib/python3.6/site-packages/S3/S3.py", line 715, in object_get
response = self.recv_file(request, stream, labels, start_position)
File "/usr/lib/python3.6/site-packages/S3/S3.py", line 1612, in recv_file
http_response = conn.c.getresponse()
File "/usr/lib/python3.6/http/client.py", line 1331, in getresponse
response.begin()
File "/usr/lib/python3.6/site-packages/S3/Custom_httplib3x.py", line 53, in httpresponse_patched_begin
version, status, reason = self._read_status()
File "/usr/lib/python3.6/http/client.py", line 266, in _read_status
raise RemoteDisconnected("Remote end closed connection without"
http.client.RemoteDisconnected: Remote end closed connection without response

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/bin/s3cmd", line 3073, in
rc = main()
File "/usr/bin/s3cmd", line 2989, in main
rc = cmd_func(args)
File "/usr/bin/s3cmd", line 1875, in cmd_sync
return cmd_sync_remote2local(args)
File "/usr/bin/s3cmd", line 1470, in cmd_sync_remote2local
ret, seq, size_transferred = _download(remote_list, seq, remote_count + update_count, size_transferred, dir_cache)
File "/usr/bin/s3cmd", line 1347, in _download
error(u"Download of '%s' failed (Reason: Unknown OsError %d)" % (file, exc.errno))
TypeError: %d format: a number is required, not NoneType