Connection Refused error when running Ansible Playbook

I'm trying to run an Ansible playbook to create a new local user account on a Big-IP VE running 13.1.3.4 using the bigip_user module. I'm able to run tasks using bigip_device_info and bigip_config modules successfully, but whenever I try to run a playbook with a module to change settings (i.e. bigip_user or bigip_snmp_community) it errors out with the message: "An exception occurred during task execution. To see the full traceback, use -vvv. The error was: urllib.error.URLError: <urlopen error [Errno 111] Connection refused>"

I'm new to Ansible on Big-IP platform. Any help on this is greatly appreciated.

Playbook:

---
- name: Add users playbook
  hosts: "{{ devices }}"
  strategy: free
  order: sorted
  connection: local
  gather_facts: no
  become: no
  become_method: enable
  ignore_errors: no

  collections:
    - f5networks.f5_modules

  vars:
    provider:
      server: "{{ ansible_host }}"
      user: <username>
      password: <password>
      validate_certs: no
      server_port: 443

  tasks:
  - name: Add or update the user
    bigip_user:
	  provider: "{{ provider }}"
	  username_credential: user
	  password_credential: password
	  update_password: always
	  full_name: User
	  shell: bash
	  partition_access:
	    - all:admin
	  state: present
    delegate_to: localhost

Error:

The full traceback is:
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/urllib/request.py", line 1350, in do_open
    encode_chunked=req.has_header('Transfer-encoding'))
  File "/usr/local/lib/python3.7/http/client.py", line 1277, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/local/lib/python3.7/http/client.py", line 1323, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/local/lib/python3.7/http/client.py", line 1272, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/local/lib/python3.7/http/client.py", line 1032, in _send_output
    self.send(msg)
  File "/usr/local/lib/python3.7/http/client.py", line 972, in send
    self.connect()
  File "/usr/local/lib/python3.7/http/client.py", line 1439, in connect
    super().connect()
  File "/usr/local/lib/python3.7/http/client.py", line 944, in connect
    (self.host,self.port), self.timeout, self.source_address)
  File "/usr/local/lib/python3.7/socket.py", line 728, in create_connection
    raise err
  File "/usr/local/lib/python3.7/socket.py", line 716, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused

Thanks,

-Edson