Traceback:
[2021/10/11 23:12:11.462] ======================================================================
[2021/10/11 23:12:11.462] FAIL: test_test_uri_options_srv-service-name-option_SRV_URI_with_custom_srvServiceName (test_uri_spec.TestAllScenarios)
[2021/10/11 23:12:11.462] ----------------------------------------------------------------------
[2021/10/11 23:12:11.462] Traceback (most recent call last):
[2021/10/11 23:12:11.462] File "/data/mci/97f7c578825da9526c744cfe77c10c20/src/test/test_uri_spec.py", line 84, in modified_test_scenario
[2021/10/11 23:12:11.462] func(*args, **kwargs)
[2021/10/11 23:12:11.462] File "/data/mci/97f7c578825da9526c744cfe77c10c20/src/test/test_uri_spec.py", line 111, in run_scenario
[2021/10/11 23:12:11.462] not expected_valid, "error") % test['description'])
[2021/10/11 23:12:11.462] AssertionError: False != True : Unexpected error for test 'SRV URI with custom srvServiceName'
[2021/10/11 23:12:11.462] ----------------------------------------------------------------------

This error occurs only when you do not have dnspython installed. https://jira.mongodb.org/browse/PYTHON-2823 This is the ticket that caused this error to start occurring.