Ansible - Running bash commands with bigip_command module - How it's done

Is the expected output from this going to be in JSON decodable format, or no? I'm trying to run a script that comes with TMOS (temp folder cleanup), and it keeps erroring out with the following.

TASK [Run clean_tmsh_tmp_dirs script against a BIG-IP] ************************************************************************************************************** fatal: [10.1.1.15 -> localhost]: FAILED! => {"changed": false, "msg": "No JSON object could be decoded"}

Here's the playbook:

---
- name: Run clean_tmsh_tmp_dirs script against BIG-IPs
  hosts: all
  connection: local
  vars:
    provider:
      password: 
      server: localhost
      user: admin
      validate_certs: no
      server_port: 443
  tasks:
  - name: Run clean_tmsh_tmp_dirs script against a BIG-IP
    bigip_command:
      commands: run /util bash -c 'yes yes | /usr/local/bin/clean_tmsh_tmp_dirs'
      provider: "{{ provider }}"
    delegate_to: localhost

Thanks,

Matt