Execute all yaml files from different directory - ansible

Question

I have a directory I have created with several sub-tasks but I'm having trouble in making Ansible run all tasks from inside the specified directory.
The script looks like this:
---
- hosts: localhost
connection: local
tasks:
# tasks file for desktop
- name: "LOADING ALL TASKS FROM THE 'SUB_TASKS' DIRECTORY"
include_vars:
dir: sub_tasks
extensions:
- 'yml'
And this is the output:
plbchk main.yml --check
[WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not
match 'all'
PLAY [localhost] ****************************************************************************************************
TASK [Gathering Facts] **********************************************************************************************
ok: [localhost]
TASK [LOADING ALL TASKS FROM THE 'SUB_TASKS' DIRECTORY] *************************************************************
fatal: [localhost]: FAILED! => {"ansible_facts": {}, "ansible_included_var_files": [], "changed": false, "message": "/home/user/Documents/ansible-roles/desktop/tasks/sub_tasks/gnome_tweaks.yml must be stored as a dictionary/hash"}
PLAY RECAP **********************************************************************************************************
localhost : ok=1 changed=0 unreachable=0 failed=1 skipped=0 rescued=0 ignored=0
I've tried all sorts of ways to make it run the sub-tasks but to no avail.
I'd like to do it this way instead of creating one big file containing all the tasks. Is this possible?

Answer 1

include_vars is not for including tasks , this is to include vars (as its name suggest). Also If you check the error message it says "must be stored as a dictionary/hash.
fatal: [localhost]: FAILED! => {"ansible_facts": {}, "ansible_included_var_files": [], "changed": false, "message": "/home/user/Documents/ansible-roles/desktop/tasks/sub_tasks/gnome_tweaks.yml must be stored as a dictionary/hash"}
Solution:
You need to use include_taskfor what you are trying. Check out here.
Here is a complete/minimal working example, here we are making a list of yaml or yml files present in a provided directory and then running include_tasks over loop for all the files.
---
- name: Sample playbook
connection: local
gather_facts: false
hosts: localhost
tasks:
- name: Find all the yaml files in the directory
find:
paths: /home/user/Documents/ansible-roles/desktop/tasks
patterns: '*.yaml,*.yml'
recurse: yes
register: file_list
- name: show the yaml files present
debug: msg="{{ item }}"
loop: "{{ file_list.files | map(attribute='path') | list }}"
- name: Include task list in play
include_tasks: "{{ item }}"
loop: "{{ file_list.files | map(attribute='path') | list }}"