Traceback (most recent call last):

 "/opt/s3cmd/s3cmd", line 1800, in <module>
main()

 "/opt/s3cmd/s3cmd", line 1741, in main
cmd_func(args)

 "/opt/s3cmd/s3cmd", line 299, in cmd_object_put
response = s3.object_put(full_name, uri_final, extra_headers, extra_label = seq_label)

 "/opt/s3cmd-1.1.0-beta3/S3/S3.py", line 388, in object_put
response = self.send_file(request, file, labels)

 "/opt/s3cmd-1.1.0-beta3/S3/S3.py", line 730, in send_file
warning("Upload failed: %s (%s)" % (resource['uri'], S3Error(response)))

 "/opt/s3cmd-1.1.0-beta3/S3/Exceptions.py", line 48, in **init**
tree = getTreeFromXml(response["data"])

 "/opt/s3cmd-1.1.0-beta3/S3/Utils.py", line 69, in getTreeFromXml
tree = ET.fromstring(xml)

 "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1301, in XML
parser.feed(text)

 "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1643, in feed
self._raiseerror(v)

 "/usr/lib/python2.7/xml/etree/ElementTree.py", line 1507, in _raiseerror
raise errParseError: syntax error: line 1, column 49
<details><summary>Test output</summary><br><pre>Traceback (most recent call last):

 "/workspace/iam/api-client/custom_roles_test.py", line 79, in test_get_role
custom_roles.get_role("roles/appengine.appViewer")

 "/workspace/iam/api-client/custom_roles.py", line 56, in get_role
role = service.roles().get(name=name).execute()

 "/workspace/iam/api-client/.nox/py-3-8/lib/python3.8/site-packages/googleapiclient/_helpers.py", line 134, in positional_wrapper
return wrapped(*args, **kwargs)

 "/workspace/iam/api-client/.nox/py-3-8/lib/python3.8/site-packages/googleapiclient/http.py", line 900, in execute
resp, content = _retry_request(

 "/workspace/iam/api-client/.nox/py-3-8/lib/python3.8/site-packages/googleapiclient/http.py", line 177, in _retry_request
resp, content = http.request(uri, method, *args, **kwargs)

 "/workspace/iam/api-client/.nox/py-3-8/lib/python3.8/site-packages/google_auth_httplib2.py", line 189, in request
self.credentials.before_request(

 "/workspace/iam/api-client/.nox/py-3-8/lib/python3.8/site-packages/google/auth/credentials.py", line 133, in before_request
self.refresh(request)

 "/workspace/iam/api-client/.nox/py-3-8/lib/python3.8/site-packages/google/oauth2/service_account.py", line 361, in refresh
access_token, expiry, _ = _client.jwt_grant(request, self._token_uri, assertion)

 "/workspace/iam/api-client/.nox/py-3-8/lib/python3.8/site-packages/google/oauth2/_client.py", line 153, in jwt_grant
response_data = _token_endpoint_request(request, token_uri, body)

 "/workspace/iam/api-client/.nox/py-3-8/lib/python3.8/site-packages/google/oauth2/_client.py", line 111, in _token_endpoint_request
response_data = json.loads(response_body)

 "/usr/local/lib/python3.8/json/__init__.py", line 357, in loads
return _default_decoder.decode(s)

 "/usr/local/lib/python3.8/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())

 "/usr/local/lib/python3.8/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from Nonejson.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)</pre></details>