Traceback (most recent call last):
  File "/home/odoo/src/odoo/13.0/odoo/http.py", line 619, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/odoo/src/odoo/13.0/odoo/http.py", line 309, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "/home/odoo/src/odoo/13.0/odoo/tools/pycompat.py", line 14, in reraise
    raise value
  File "/home/odoo/src/odoo/13.0/odoo/http.py", line 664, in dispatch
    result = self._call_function(**self.params)
  File "/home/odoo/src/odoo/13.0/odoo/http.py", line 345, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/odoo/src/odoo/13.0/odoo/service/model.py", line 93, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/odoo/src/odoo/13.0/odoo/http.py", line 338, in checked_call
    result = self.endpoint(*a, **kw)
  File "/home/odoo/src/odoo/13.0/odoo/http.py", line 910, in __call__
    return self.method(*args, **kw)
  File "/home/odoo/src/odoo/13.0/odoo/http.py", line 510, in response_wrap
    response = f(*args, **kw)
  File "/home/odoo/src/odoo/13.0/addons/web/controllers/main.py", line 1324, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "/home/odoo/src/odoo/13.0/addons/web/controllers/main.py", line 1312, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/home/odoo/src/odoo/13.0/odoo/api.py", line 395, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "/home/odoo/src/odoo/13.0/odoo/api.py", line 382, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/home/odoo/src/odoo/13.0/addons/mail/wizard/invite.py", line 87, in add_followers
    message.write({'res_id': False, 'res_model': False}) # TBE: Instead just do not link the message to the record
  File "/home/odoo/src/odoo/13.0/addons/mail/models/mail_message.py", line 1096, in write
    res = super(Message, self).write(vals)
  File "/home/odoo/src/odoo/13.0/odoo/models.py", line 3472, in write
    raise ValueError("Invalid field %r on model %r" % (fname, self._name))
ValueError: Invalid field 'res_model' on model 'mail.message'