Why are we getting a connection issue error for the ta-cisco-webex-meetings-add-on-for-splunk?

[kiranpanchavat1]

We have installed the CISCO WEBEX MEETING ADD ON FOR SPLUNK in the heavy forwarder to on board the logs, but we are getting the below connection error. kindly advise me where i missed. I hope this is related to some proxy issue. 

2022-02-20 16:36:43,766 WARNING pid=3953874 tid=MainThread file=connectionpool.py:urlopen:745 | Retrying (Retry(total=5, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7fb34aed6050>: Failed to establish a new connection: [Errno -2] Name or service not known')': /WBXService/XMLService

2022-02-20 16:36:27,753 WARNING pid=3953874 tid=MainThread file=connectionpool.py:urlopen:745 | Retrying (Retry(total=6, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7fb34aec5d50>: Failed to establish a new connection: [Errno -2] Name or service not known')': /WBXService/XMLService

2022-02-20 16:36:13,741 WARNING pid=3953874 tid=MainThread file=connectionpool.py:urlopen:745 | Retrying (Retry(total=9, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7fb34aec55d0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /WBXService/XMLService

2022-02-20 16:36:07,939 ERROR pid=3952469 tid=MainThread file=base_modinput.py:log_error:309 | Get error when collecting events.
Traceback (most recent call last):
File "/opt/splunk/etc/apps/ta-cisco-webex-meetings-add-on-for-splunk/bin/ta_cisco_webex_meetings_add_on_for_splunk/aob_py3/urllib3/connection.py", line 157, in _new_conn
(self._dns_host, self.port), self.timeout, **extra_kw
File "/opt/splunk/etc/apps/ta-cisco-webex-meetings-add-on-for-splunk/bin/ta_cisco_webex_meetings_add_on_for_splunk/aob_py3/urllib3/util/connection.py", line 61, in create_connection

[kiranpanchavat1]

Can any one please provide an update on this