ansible 2.9.9 can't configure cluster using kubernetes 0.12

During installation on a new oas server i encounter the following error

TASK [apps : Create OAS namespaces] ***************************************************************************************************************************************************************************************************************************
Monday 15 March 2021  11:29:59 +0100 (0:00:01.192)       0:00:06.916 ********** 
failed: [alumnicloud-testing] (item=oas) => changed=false 
  ansible_loop_var: item
  item: oas
  module_stderr: |-
    /usr/lib/python3/dist-packages/requests/__init__.py:91: RequestsDependencyWarning: urllib3 (1.26.3) or chardet (3.0.4) doesn't match a supported version!
      RequestsDependencyWarning)
    Traceback (most recent call last):
      File "/usr/local/lib/python3.7/dist-packages/urllib3/connection.py", line 170, in _new_conn
        (self._dns_host, self.port), self.timeout, **extra_kw
      File "/usr/local/lib/python3.7/dist-packages/urllib3/util/connection.py", line 96, in create_connection
        raise err
      File "/usr/local/lib/python3.7/dist-packages/urllib3/util/connection.py", line 86, in create_connection
        sock.connect(sa)
    ConnectionRefusedError: [Errno 111] Connection refused