How to add nested dictionary to dynamic host in Ansible - dictionary

Question

I have application details in respective vars like below. For example, myapp1 in "QA" environment would look like the below:
cat myapp1_QA.yml
---
APP_HOSTS:
- myapphost7:
- logs:
- /tmp/web/apphost7_access
- /tmp/web/apphost7_error
- myapphost9:
- logs:
- /tmp/web/apphost9_access
- /tmp/web/apphost9_error
- /tmp/web/apphost9_logs
WEB_HOSTS:
- mywebhost7:
- logs:
- /tmp/webserver/webhost7.pid
In this example I wish to create a dynamic host containing the 3 hosts
myapphost7
myapphost9
mywebhost7
and each host has variable log which can be looped to get the file paths:
Below is my ansible play:
---
- hosts: localhost
tasks:
- include_vars:
file: "{{ playbook_dir }}/{{ appname }}_{{ myenv }}.yml"
- name: Dsiplay dictionary data
debug:
msg: "{{ item[logs] }}"
loop: "{{ APP_HOSTS }}"
I get the below error:
ansible-playbook read.yml -e appname=myapp1 -e myenv=QA
TASK [Dsiplay dictionary data] *********************************************************************************************************************************************************************************
fatal: [localhost]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'logs' is undefined\n\nThe error appears to be in '/root/read.yml': line 8, column 7, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n - name: Dsiplay dictionary data\n ^ here\n"}
My requirement is to store "myapphost7", "myapphost9", "mywebhost7" in group using add_hosts: hosts: while a variable logs: having the list of log files.
Note: if no hosts mywebhost7 is defined under WEB_HOSTS: or APP_HOSTS: then nothing should be added to the dynamic host.
Can you please suggest?