Google Driveにファイルをアップロードするとエラーになる

前提・実現したいこと

PyDriveを使用してGoogle Driveにファイルをアップロードしたいと思っています。
コードを実行すると「Your browser has been opened to visit:」と返ってきたためそのURL先に飛び、
・Googleアカウントへのログインを「許可」
・ブラウザに「The authentication flow has completed.」と表示
というところまではいったのですが、その後エディタに戻ると以下のようなエラーメッセージが発生し、ファイルのアップロードに進むことができません。

エラーの原因や解決方法をご教示頂けますでしょうか。何卒宜しくお願い致します。

発生している問題・エラーメッセージ

OSError                                   Traceback (most recent call last)
<ipython-input-33-51984c26e123> in <module>
      1 gauth = GoogleAuth()
----> 2 gauth.LocalWebserverAuth()

~\Anaconda3.1\lib\site-packages\pydrive\auth.py in _decorated(self, *args, **kwargs)
    123         dirty = True
    124     if code is not None:
--> 125       self.Auth(code)
    126     if dirty and save_credentials:
    127       self.SaveCredentials()

~\Anaconda3.1\lib\site-packages\pydrive\auth.py in Auth(self, code)
    493     :raises: AuthenticationError
    494     """
--> 495     self.Authenticate(code)
    496     self.Authorize()
    497 

~\Anaconda3.1\lib\site-packages\pydrive\auth.py in Authenticate(self, code)
    506       self.GetFlow()
    507     try:
--> 508       self.credentials = self.flow.step2_exchange(code)
    509     except FlowExchangeError as e:
    510       raise AuthenticationError('OAuth2 code exchange failed: %s' % e)

~\Anaconda3.1\lib\site-packages\oauth2client\_helpers.py in positional_wrapper(*args, **kwargs)
    131                 elif positional_parameters_enforcement == POSITIONAL_WARNING:
    132                     logger.warning(message)
--> 133             return wrapped(*args, **kwargs)
    134         return positional_wrapper
    135 

~\Anaconda3.1\lib\site-packages\oauth2client\client.py in step2_exchange(self, code, http, device_flow_info)
   2051             http = transport.get_http_object()
   2052 
-> 2053         resp, content = transport.request(
   2054             http, self.token_uri, method='POST', body=body, headers=headers)
   2055         d = _parse_exchange_token_response(content)

~\Anaconda3.1\lib\site-packages\oauth2client\transport.py in request(http, uri, method, body, headers, redirections, connection_type)
    278     # NOTE: Allowing http or http.request is temporary (See Issue 601).
    279     http_callable = getattr(http, 'request', http)
--> 280     return http_callable(uri, method=method, body=body, headers=headers,
    281                          redirections=redirections,
    282                          connection_type=connection_type)

~\Anaconda3.1\lib\site-packages\httplib2\__init__.py in request(self, uri, method, body, headers, redirections, connection_type)
   1706                     content = b""
   1707                 else:
-> 1708                     (response, content) = self._request(
   1709                         conn, authority, uri, request_uri, method, body, headers, redirections, cachekey,
   1710                     )

~\Anaconda3.1\lib\site-packages\httplib2\__init__.py in _request(self, conn, host, absolute_uri, request_uri, method, body, headers, redirections, cachekey)
   1422             auth.request(method, request_uri, headers, body)
   1423 
-> 1424         (response, content) = self._conn_request(conn, request_uri, method, body, headers)
   1425 
   1426         if auth:

~\Anaconda3.1\lib\site-packages\httplib2\__init__.py in _conn_request(self, conn, request_uri, method, body, headers)
   1344             try:
   1345                 if conn.sock is None:
-> 1346                     conn.connect()
   1347                 conn.request(method, request_uri, body, headers)
   1348             except socket.timeout:

~\Anaconda3.1\lib\site-packages\httplib2\__init__.py in connect(self)
   1180             break
   1181         if not self.sock:
-> 1182             raise socket_err
   1183 
   1184 

~\Anaconda3.1\lib\site-packages\httplib2\__init__.py in connect(self)
   1136                 sock.connect((self.host, self.port))
   1137 
-> 1138                 self.sock = self._context.wrap_socket(sock, server_hostname=self.host)
   1139 
   1140                 # Python 3.3 compatibility: emulate the check_hostname behavior

~\Anaconda3.1\lib\ssl.py in wrap_socket(self, sock, server_side, do_handshake_on_connect, suppress_ragged_eofs, server_hostname, session)
    498         # SSLSocket class handles server_hostname encoding before it calls
    499         # ctx._wrap_socket()
--> 500         return self.sslsocket_class._create(
    501             sock=sock,
    502             server_side=server_side,

~\Anaconda3.1\lib\ssl.py in _create(cls, sock, server_side, do_handshake_on_connect, suppress_ragged_eofs, server_hostname, context, session)
   1038                         # non-blocking
   1039                         raise ValueError("do_handshake_on_connect should not be specified for non-blocking sockets")
-> 1040                     self.do_handshake()
   1041             except (OSError, ValueError):
   1042                 self.close()

~\Anaconda3.1\lib\ssl.py in do_handshake(self, block)
   1307             if timeout == 0.0 and block:
   1308                 self.settimeout(None)
-> 1309             self._sslobj.do_handshake()
   1310         finally:
   1311             self.settimeout(timeout)

OSError: [Errno 0] Error

該当のソースコード

Python3.8
1import os
2import pprint
3
4from pydrive.auth import GoogleAuth
5from pydrive.drive import GoogleDrive
6
7
8
9secrets_file = os.path.normpath (R"C:\Users\－－－－\Anaconda3.1/client_secrets.json")
10settings_file = os.path.normpath (R"C:\\Users\－－－－\Anaconda3.1/settings.yaml")
11
12gauth = GoogleAuth(settings_file=settings_file)
13
14GoogleAuth.DEFAULT_SETTINGS['client_config_file'] = secrets_file
15
16
17
18gauth = GoogleAuth()
19gauth.LocalWebserverAuth()