/ansible-nginx-config/templates/core.j2", line 323, in macro
TypeError: sequence item 9: expected str instance, Undefined found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.11/site-packages/ansible/plugins/action/template.py", line 141, in run
    resultant = templar.do_template(template_data, preserve_trailing_newlines=True, escape_backslashes=False)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/ansible/template/__init__.py", line 998, in do_template
    raise AnsibleError("Unexpected templating type error occurred on (%s): %s" % (to_native(data), to_native(te)), orig_exc=te)
ansible.errors.AnsibleError: Unexpected templating type error occurred on ({{ ansible_managed | comment }}

{% if nginx_config_main_template['config']['main'] is defined %}
{% from 'core.j2' import main with context %}
{{ main(nginx_config_main_template['config']['main']) }}
{%- endif %}

{% if nginx_config_main_template['config']['include'] is defined and nginx_config_main_template['config']['include'] is not mapping %}
{% for file in nginx_config_main_template['config']['include'] if nginx_config_main_template['config']['include'] is not string %}
include {{ file }};
{% else %}
include {{ nginx_config_main_template['config']['include'] }};
{% endfor %}
{%- endif %}

events {
{% if nginx_config_main_template['config']['events'] is defined %}
{% from 'core.j2' import events with context %}
{% filter indent(4) %}
    {{ events(nginx_config_main_template['config']['events']) }}
{%- endfilter %}
{% endif %}
}

{% if nginx_config_main_template['config']['http'] is defined %}
http {
{% if nginx_config_main_template['config']['http']['include'] is defined and nginx_config_main_template['config']['http']['include'] is not mapping %}
{% for file in nginx_config_main_template['config']['http']['include'] if nginx_config_main_template['config']['http']['include'] is not string %}
    include {{ file }};
{% else %}
    include {{ nginx_config_main_template['config']['http']['include'] }};
{% endfor %}
{% endif %}
}
{% endif %}

{% if nginx_config_main_template['config']['stream'] is defined %}
stream {
{% if nginx_config_main_template['config']['stream']['include'] is defined and nginx_config_main_template['config']['stream']['include'] is not mapping %}
{% for file in nginx_config_main_template['config']['stream']['include'] if nginx_config_main_template['config']['stream']['include'] is not string %}
    include {{ file }};
{% else %}
    include {{ nginx_config_main_template['config']['stream']['include'] }};
{% endfor %}
{% endif %}
}
{% endif %}
): sequence item 9: expected str instance, Undefined found. sequence item 9: expected str instance, Undefined found
fatal: [servertest-A]: FAILED! => {
    "changed": false,
    "msg": "AnsibleError: Unexpected templating type error occurred on ({{ ansible_managed | comment }}\n\n{% if nginx_config_main_template['config']['main'] is defined %}\n{% from 'core.j2' import main with context %}\n{{ main(nginx_config_main_template['config']['main']) }}\n{%- endif %}\n\n{% if nginx_config_main_template['config']['include'] is defined and nginx_config_main_template['config']['include'] is not mapping %}\n{% for file in nginx_config_main_template['config']['include'] if nginx_config_main_template['config']['include'] is not string %}\ninclude {{ file }};\n{% else %}\ninclude {{ nginx_config_main_template['config']['include'] }};\n{% endfor %}\n{%- endif %}\n\nevents {\n{% if nginx_config_main_template['config']['events'] is defined %}\n{% from 'core.j2' import events with context %}\n{% filter indent(4) %}\n    {{ events(nginx_config_main_template['config']['events']) }}\n{%- endfilter %}\n{% endif %}\n}\n\n{% if nginx_config_main_template['config']['http'] is defined %}\nhttp {\n{% if nginx_config_main_template['config']['http']['include'] is defined and nginx_config_main_template['config']['http']['include'] is not mapping %}\n{% for file in nginx_config_main_template['config']['http']['include'] if nginx_config_main_template['config']['http']['include'] is not string %}\n    include {{ file }};\n{% else %}\n    include {{ nginx_config_main_template['config']['http']['include'] }};\n{% endfor %}\n{% endif %}\n}\n{% endif %}\n\n{% if nginx_config_main_template['config']['stream'] is defined %}\nstream {\n{% if nginx_config_main_template['config']['stream']['include'] is defined and nginx_config_main_template['config']['stream']['include'] is not mapping %}\n{% for file in nginx_config_main_template['config']['stream']['include'] if nginx_config_main_template['config']['stream']['include'] is not string %}\n    include {{ file }};\n{% else %}\n    include {{ nginx_config_main_template['config']['stream']['include'] }};\n{% endfor %}\n{% endif %}\n}\n{% endif %}\n): sequence item 9: expected str instance, Undefined found. sequence item 9: expected str instance, Undefined found"
}