AttributeError: module 'odoo.addons.website_supportzayd' has no attribute '_unlink_messages_data'

it returns this error

Hello Hibri,
May be below module will helpful for you.
You have to define the below code in __manifest__.py file

'post_init_hook': '_unlink_messages_data',


and also define below code in __init__.py file

from odoo import api, SUPERUSER_ID

def _unlink_messages_data(cr, registry):
env = api.Environment(cr, SUPERUSER_ID, {})
messages = env["mail.message"].search([]).unlink()

Thanks & Regards,
Email: odoo@aktivsoftware.com
Skype: kalpeshmaheshwari

Hello 

Delete it from mail.message