Why can’t ansible-lint find this module?

[AndrewKvalheim]

ansible-lint is warning me that it can’t find modules from dokku_bot.ansible_dokku:

$ ansible-lint --version
ansible-lint 6.14.3 using ansible 2.14.0
$ cat 'playbook.yml'
- name: Example
  hosts: all
  roles: [dokku_bot.ansible_dokku]
  tasks:
    - name: Example
      dokku_app:
$ cat 'requirements.yml'
- { src: dokku_bot.ansible_dokku, version: v2022.10.17 }
$ ansible-galaxy role install --role-file 'requirements.yml'
Starting galaxy role install process
- dokku_bot.ansible_dokku (v2022.10.17) is already installed, skipping.
$ ansible-lint 'playbook.yml'
WARNING  Ignored exception from ArgsRule.<bound method AnsibleLintRule.matchtasks of args: Validating module arguments.> while processing playbook.yml (playbook): No module named 'ansible.module_utils.dokku_app'

Passed with production profile: 0 failure(s), 0 warning(s) on 1 files.

What does it want me to do here?