Command type msf-module in includes.yml example throws Type Error

Executing the Example playbook include.yml the command type msf-module in gather_commands.yml:
The prepare_exploit() functions throws an Type Error **"Module or Module Type is Unknown: Value must be an integer not 'str'"**


How to reproduce:
`attackm8 --debug includes.yml`

content of gather_commands.yml:
```
commands:
- type: msf-module
cmd: post/linux/gather/enum_users_history
options:
SESSION: $GATHER_SESSION
```

manually using the exploit in msf console works fine