o2m 其中一条记录选择父级报错

[hui]

在执行报存操作的时候，偶尔会报这个错。只有在one2many字段中给某条记录选择父级的时候有这个错。有能解读下报错原因的吗？非常感谢。

Traceback (most recent call last):
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/fields.py", line 944, in __get__
    value = record.env.cache.get(record, self)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/api.py", line 967, in get
    value = self._data[key][field][record._ids[0]]
KeyError: 16

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 651, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 310, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/tools/pycompat.py", line 87, in reraise
    raise value
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 693, in dispatch
    result = self._call_function(**self.params)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 342, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/service/model.py", line 97, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 335, in checked_call
    result = self.endpoint(*a, **kw)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 937, in __call__
    return self.method(*args, **kw)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 515, in response_wrap
    response = f(*args, **kw)
  File "/home/hui/odoo-dev/odoo11/odoo11/addons/web/controllers/main.py", line 934, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "/home/hui/odoo-dev/odoo11/odoo11/addons/web/controllers/main.py", line 926, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/api.py", line 687, in call_kw
    return call_kw_model(method, model, args, kwargs)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/api.py", line 672, in call_kw_model
    result = method(recs, *args, **kwargs)
  File "/home/hui/odoo-dev/odoo11/odoo11/addons/mail/models/mail_thread.py", line 238, in create
    thread = super(MailThread, self).create(values)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/models.py", line 3393, in create
    record = self.browse(self._create(old_vals))
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/models.py", line 3550, in _create
    self.recompute()
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/models.py", line 4930, in recompute
    vals = {n: rec[n] for n in ns}
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/models.py", line 4930, in <dictcomp>
    vals = {n: rec[n] for n in ns}
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/models.py", line 4784, in __getitem__
    return self._fields[key].__get__(self, type(self))
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/fields.py", line 951, in __get__
    value = record.env.cache.get(record, self)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/api.py", line 967, in get
    value = self._data[key][field][record._ids[0]]
KeyError: 16

[hui]

2019-07-17 02:25:15,920 5812 ERROR 0703_v11 odoo.http: Exception during JSON request handling.
Traceback (most recent call last):
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/fields.py", line 944, in __get__
    value = record.env.cache.get(record, self)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/api.py", line 967, in get
    value = self._data[key][field][record._ids[0]]
KeyError: <odoo.models.NewId object at 0x7f2984a3b6a8>

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 651, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 310, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/tools/pycompat.py", line 87, in reraise
    raise value
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 693, in dispatch
    result = self._call_function(**self.params)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 342, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/service/model.py", line 97, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 335, in checked_call
    result = self.endpoint(*a, **kw)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 937, in __call__
    return self.method(*args, **kw)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/http.py", line 515, in response_wrap
    response = f(*args, **kw)
  File "/home/hui/odoo-dev/odoo11/odoo11/addons/web/controllers/main.py", line 934, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "/home/hui/odoo-dev/odoo11/odoo11/addons/web/controllers/main.py", line 926, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/api.py", line 689, in call_kw
    return call_kw_multi(method, model, args, kwargs)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/api.py", line 680, in call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/models.py", line 5197, in onchange
    snapshot1 = Snapshot(record, nametree)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/models.py", line 5104, in __init__
    if subnames else record[name]
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/models.py", line 4784, in __getitem__
    return self._fields[key].__get__(self, type(self))
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/fields.py", line 951, in __get__
    value = record.env.cache.get(record, self)
  File "/home/hui/odoo-dev/odoo11/odoo11/odoo/api.py", line 967, in get
    value = self._data[key][field][record._ids[0]]
KeyError: <odoo.models.NewId object at 0x7f2984a3b6a8>