Cannot send Slack notification via Ansible - ansible

Question

I'm trying to send a Slack notification via Ansible:
- name: Send a custom slack notification
run_once: true
slack:
#s3_backups Slack channel
token: token/stuff/here
attachments:
- text: "S3 Web Server Config Backup Complete."
title: S3 Web Server Backups
color: "#8FCC2C"
delegate_to: localhost
However, I'm getting a fatal error:
TASK [s3_fsn_backend_config_backup : Send a custom slack notification] ********************************************************************************************************************************************
Sorry, try again.
Sorry, try again.
fatal: [webserver-name -> localhost]: FAILED! => {"changed": false, "module_stderr": "[sudo via ansible, key=blahblahblahblahblah] password:[sudo via ansible, key=blahblahblahblahblah] password:sudo: 3 incorrect password attempts\n", "module_stdout": "", "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error", "rc": 1}
Am I using incorrect syntax? I just want it to run from localhost. I definitely don't understand what the Sorry, try again message means.

Answer 1

You can try the following code snippet
- name: Send slack notifications
slack:
token: "{{ slack_token }}"
msg: "Hello World"
channel: "#general"
username: "Ansible"
icon_url: "https://www.ansible.com/favicon.ico"
link_names: 1
parse: "full"
color: "#00ff00"
attachments:
- text: "This is an attachment"
color: "#ff0000"
fields:
- title: "Field 1"
value: "This is an attachment"
short: false
- title: "Field 2"
value: "This is an attachment"
short: false
footer: "Footer"
footer_icon: "https://www.ansible.com/favicon.ico"
ts: 123456789
More details available at slack_module