# The field 'environment' has an invalid value, which includes an undefined variable. The error was: 'ssh_args_default' is undefined

**URL:** https://discourse.roots.io/t/the-field-environment-has-an-invalid-value-which-includes-an-undefined-variable-the-error-was-ssh-args-default-is-undefined/23413
**Category:** trellis
**Created:** 2022-06-22T10:30:23Z
**Posts:** 2

## Post 1 by @intelligence — 2022-06-22T10:30:24Z

This one is new for me, any idea what might cause it? Project scaffolded today with latest `trellis-cli`

```
virtualenv ❯ trellis deploy staging
Running command => ansible-playbook deploy.yml -e env=staging site=domain.tld
[WARNING]: Skipping plugin (/Users/user/WWW/domain.tld/trellis/lib/t
rellis/plugins/callback/vars.py) as it seems to be invalid: cannot import name
'cli' from ' __main__'
(/Users/user/WWW/domain.tld/trellis/.trellis/virtualenv/bin/ansible-
playbook)

PLAY [Ensure necessary variables are defined] **********************************

TASK [Ensure environment is defined] *******************************************
skipping: [localhost]

PLAY [Test Connection] *********************************************************

TASK [connection : Require manual definition of remote-user] *******************
skipping: [x.x.x.x]

TASK [connection : Specify preferred HostKeyAlgorithms for unknown hosts] ******
skipping: [x.x.x.x]

TASK [connection : Check whether Ansible can connect as domain] ************
System info:
  Ansible 2.13.1; Darwin
  Trellis version (per changelog): "Add built-in fail2ban filters"
---------------------------------------------------
The field 'environment' has an invalid value, which includes an undefined
variable. The error was: 'ssh_args_default' is undefined

The error appears to be in '/Users/user/WWW/domain.tld/trellis/rol
es/connection/tasks/main.yml': line 18, column 3, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:

- name: Check whether Ansible can connect as {{ dynamic_user | default(true)
| ternary('root', web_user) }}
  ^ here
We could be wrong, but this one looks like it might be an issue with
missing quotes. Always quote template expression brackets when they
start a value. For instance:

    with_items:
      - {{ foo }}

Should be written as:

    with_items:
      - "{{ foo }}"
fatal: [x.x.x.x -> localhost]: FAILED! => {}

PLAY RECAP *********************************************************************
x.x.x.x : ok=0 changed=0 unreachable=0 failed=1 skipped=2 rescued=0 ignored=0
localhost : ok=0 changed=0 unreachable=0 failed=0 skipped=1 rescued=0 ignored=0

exit status 2
```

---

## Post 2 by @codepuncher — 2022-06-22T13:52:40Z

I’ve posted a [workaround](https://github.com/roots/trellis/issues/1393#what-have-you-tried) for this in a bug report.

I hope that helps.