python3 and API V2: turn off certificate checking?

I'm using python3 and used pip install dropbox.

On my home machine, I use the sample with

dbx.users_get_curent_account()

 and it works fine.  On the work VPN, I get a stream of exceptions (pasted below) the bottom line is requests is refusing to connect because of "Self signed cretificate in certificate chain".  What I would like to do is catch the exception and offer the user a chance to retry without certificate checks.  Is this possible with the API V2?  I looked at the source of class Dropbox and create_session but can't see anything likely looking.

Thanks in advance

Source/dropbox $ cat demo.py

import dropbox

dbx=dropbox.Dropbox('oLvM1y1OkxIAAAAAAAAEYiHj9UyVA1EME8CGGsxnMp-e2DGlAaqutsyuXejU_k7d')

print( dbx.users_get_current_account() )

Source/dropbox $ py demo.py
Traceback (most recent call last):
  File "C:\Program Files\Python37\lib\site-packages\urllib3\connectionpool.py", line 662, in urlopen
    self._prepare_proxy(conn)
  File "C:\Program Files\Python37\lib\site-packages\urllib3\connectionpool.py", line 948, in _prepare_proxy
    conn.connect()
  File "C:\Program Files\Python37\lib\site-packages\urllib3\connection.py", line 394, in connect
    ssl_context=context,
  File "C:\Program Files\Python37\lib\site-packages\urllib3\util\ssl_.py", line 370, in ssl_wrap_socket
    return context.wrap_socket(sock, server_hostname=server_hostname)
  File "C:\Program Files\Python37\lib\ssl.py", line 423, in wrap_socket
    session=session
  File "C:\Program Files\Python37\lib\ssl.py", line 870, in _create
    self.do_handshake()
  File "C:\Program Files\Python37\lib\ssl.py", line 1139, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1076)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Program Files\Python37\lib\site-packages\requests\adapters.py", line 449, in send
    chunked=chunked
  File "C:\Program Files\Python37\lib\site-packages\urllib3\connectionpool.py", line 720, in urlopen
    method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]
  File "C:\Program Files\Python37\lib\site-packages\urllib3\util\retry.py", line 436, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='api.dropboxapi.com', port=443): Max retries exceeded with url: /2/users/get_current_account (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1076)')))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "demo.py", line 6, in <module>
    print( dbx.users_get_current_account() )
  File "C:\Program Files\Python37\lib\site-packages\dropbox\base.py", line 5069, in users_get_current_account
    None,
  File "C:\Program Files\Python37\lib\site-packages\dropbox\dropbox.py", line 274, in request
    timeout=timeout)
  File "C:\Program Files\Python37\lib\site-packages\dropbox\dropbox.py", line 365, in request_json_string_with_retry
    timeout=timeout)
  File "C:\Program Files\Python37\lib\site-packages\dropbox\dropbox.py", line 449, in request_json_string
    timeout=timeout,
  File "C:\Program Files\Python37\lib\site-packages\requests\sessions.py", line 578, in post
    return self.request('POST', url, data=data, json=json, **kwargs)
  File "C:\Program Files\Python37\lib\site-packages\requests\sessions.py", line 530, in request
    resp = self.send(prep, **send_kwargs)
  File "C:\Program Files\Python37\lib\site-packages\requests\sessions.py", line 643, in send
    r = adapter.send(request, **kwargs)
  File "C:\Program Files\Python37\lib\site-packages\requests\adapters.py", line 469, in send
    raise SSLError(e, request=request)
requests.exceptions.SSLError: HTTPSConnectionPool(host='api.dropboxapi.com', port=443): Max retries exceeded with url: /2/users/get_current_account (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1076)')))