Odoo OCB 14.0 - KeyError: 'cancel_count', systray_get_activities related?

Module

Resulting likely from within OCB 14.0 core. Might involve mass_mailing

Describe the bug

Seems to be a problem generated in odoo/addons/mail/models/res_users.py line 153 where systray_get_activities functions concatenates 'cancel' to '_count' . However, I am not able to figure out where this 'cancel' comes from or which model is being acted on. This results in a KeyError as 'cancel_count' doesn't exist for the given model.

Upon login,and when clicking the 'Activities' icon, all users see an error message as follows:

Odoo Server Error
Traceback (most recent call last):
  File "/home/odoo/src/odoo-14.0-OCB/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "/home/odoo/src/odoo-14.0-OCB/odoo/http.py", line 696, in dispatch
    result = self._call_function(**self.params)
  File "/home/odoo/src/odoo-14.0-OCB/odoo/http.py", line 370, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/odoo/src/odoo-14.0-OCB/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/odoo/src/odoo-14.0-OCB/odoo/http.py", line 358, in checked_call
    result = self.endpoint(*a, **kw)
  File "/home/odoo/src/odoo-14.0-OCB/odoo/http.py", line 919, in __call__
    return self.method(*args, **kw)
  File "/home/odoo/src/odoo-14.0-OCB/odoo/http.py", line 544, in response_wrap
    response = f(*args, **kw)
  File "/home/odoo/src/odoo-14.0-OCB/addons/web/controllers/main.py", line 1370, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "/home/odoo/src/odoo-14.0-OCB/addons/web/controllers/main.py", line 1362, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/home/odoo/src/odoo-14.0-OCB/odoo/api.py", line 395, in call_kw
    result = _call_kw_model(method, model, args, kwargs)
  File "/home/odoo/src/odoo-14.0-OCB/odoo/api.py", line 368, in _call_kw_model
    result = method(recs, *args, **kwargs)
  File "/home/odoo/src/odoo-14.0-OCB/addons/mass_mailing/models/res_users.py", line 16, in systray_get_activities
    activities = super(Users, self).systray_get_activities()
  File "/home/odoo/src/odoo-14.0-OCB/addons/note/models/res_users.py", line 55, in systray_get_activities
    activities = super(Users, self).systray_get_activities()
  File "/home/odoo/src/odoo-14.0-OCB/addons/contacts/models/res_users.py", line 15, in systray_get_activities
    activities = super(Users, self).systray_get_activities()
  File "/home/odoo/src/odoo-14.0-OCB/addons/calendar/models/res_users.py", line 37, in systray_get_activities
    res = super(Users, self).systray_get_activities()
  File "/home/odoo/src/odoo-14.0-OCB/addons/mail/models/res_users.py", line 154, in systray_get_activities
    user_activities[model_name]["%s_count" % activity.state] += 1
Exception

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/odoo/src/odoo-14.0-OCB/odoo/http.py", line 652, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/odoo/src/odoo-14.0-OCB/odoo/http.py", line 317, in _handle_exception
    raise exception.with_traceback(None) from new_cause
KeyError: 'cancel_count'

To Reproduce

I see this error in my 14.0 installation.

Steps to reproduce the behaviour:

In my case this started happening after a recent update to OCB 14.0 core
I have run update all modules on the database and tried to clear out all sessions/caches, but still the same.

Expected behavior There should be no login error message.

Additional context Running with Python 3.8.13 (default, Nov 8 2022, 17:19:05) [GCC 8.5.0 20210514 (Red Hat 8.5.0-15)] on linux

OCA / OCB