ssl vcertification error #206

hi i had created the one docker container from which i am trying to connect to my rocketchat domain, where i am getting the ssl certification error.
rocket = RocketChat('shraddha_rathor@demo.com, '****************', server_url='https://rocketchat.demo.com')
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/urllib3/connectionpool.py", line 703, in urlopen
    httplib_response = self._make_request(
                       ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/urllib3/connectionpool.py", line 386, in _make_request
    self._validate_conn(conn)
  File "/usr/local/lib/python3.11/site-packages/urllib3/connectionpool.py", line 1042, in validate_conn
    conn.connect()
  File "/usr/local/lib/python3.11/site-packages/urllib3/connection.py", line 419, in connect
    self.sock = ssl_wrap_socket(
                ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/urllib3/util/ssl.py", line 449, in ssl_wrap_socket
    ssl_sock = ssl_wrap_socket_impl(
               ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/urllib3/util/ssl.py", line 493, in _ssl_wrap_socket_impl
    return ssl_context.wrap_socket(sock, server_hostname=server_hostname)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/ssl.py", line 517, in wrap_socket
    return self.sslsocket_class._create(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/ssl.py", line 1075, in _create
    self.do_handshake()
  File "/usr/local/lib/python3.11/ssl.py", line 1346, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:992)