Python 我正在尝试在odoo中安装新模块，但出现错误，AttributeError:'；str'；对象没有属性'；设置默认值'；

我正在尝试使用ODOO服务器，但是我遇到了这个异常。似乎是一个配置问题：

Traceback (most recent call last):
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/http.py", line 640, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/http.py", line 316, in _handle_exception
    raise exception.with_traceback(None) from new_cause
**AttributeError: 'str' object has no attribute 'setdefault'**

Odoo服务器错误

Traceback (most recent call last):
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/addons/base/models/ir_http.py", line 237, in _dispatch
    result = request.dispatch()
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/http.py", line 684, in dispatch
    result = self._call_function(**self.params)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/http.py", line 360, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/service/model.py", line 94, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/http.py", line 348, in checked_call
    result = self.endpoint(*a, **kw)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/http.py", line 913, in __call__
    return self.method(*args, **kw)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/http.py", line 532, in response_wrap
    response = f(*args, **kw)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/addons/web/controllers/main.py", line 1368, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/addons/web/controllers/main.py", line 1356, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/api.py", line 396, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/api.py", line 383, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "<decorator-gen-71>", line 2, in button_immediate_install
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/addons/base/models/ir_module.py", line 73, in check_and_log
    return method(self, *args, **kwargs)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/addons/base/models/ir_module.py", line 474, in button_immediate_install
    return self._button_immediate_function(type(self).button_install)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/addons/base/models/ir_module.py", line 592, in _button_immediate_function
    modules.registry.Registry.new(self._cr.dbname, update_module=True)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/modules/registry.py", line 89, in new
    odoo.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/modules/loading.py", line 453, in load_modules
    processed_modules += load_marked_modules(cr, graph,
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/modules/loading.py", line 346, in load_marked_modules
    loaded, processed = load_module_graph(
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/modules/loading.py", line 197, in load_module_graph
    registry.setup_models(cr)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/modules/registry.py", line 269, in setup_models
    model._setup_base()
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/models.py", line 2780, in _setup_base
    self._add_field(name, field.new())
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/models.py", line 402, in _add_field
    field.setup_base(self, name)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/fields.py", line 278, in setup_base
    self._setup_attrs(model, name)
  File "/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/fields.py", line 2282, in _setup_attrs
    ondelete.setdefault(key, 'set null')
Exception

回溯（最近一次呼叫最后一次）：
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/addons/base/models/ir_http.py”，第237行，在
结果=request.dispatch（）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/http.py”，第684行，待发送
结果=self.\u调用函数（**self.params）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/http.py”，第360行，在调用函数中
返回选中的\u调用（self.db、*args、**kwargs）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/service/model.py”，第94行，在包装器中
返回f（数据库名，*args，**kwargs）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/http.py”，第348行，在checked_调用中
结果=自身终点（*a，**kw）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/http.py”，第913行，在调用中__
返回自方法（*参数，**kw）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/http.py”，第532行，作为回复
响应=f（*参数，**kw）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/addons/web/controllers/main.py”，第1368行，调用按钮
动作=自身。调用（模型、方法、参数、kwargs）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/addons/web/controllers/main.py”，第1356行，输入kw
返回调用（request.env[model]，方法，args，kwargs）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/api.py”，第396行，调用
结果=_call_kw_multi（方法、模型、参数、kwargs）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/api.py”，第383行，在调用中
结果=方法（recs、*args、**kwargs）
文件“”，第2行，在“立即安装”按钮中
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/addons/base/models/ir_module.py”，第73行，在check_和_日志中
返回方法（self、*args、**kwargs）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/addons/base/models/ir_module.py”，第474行，在“立即安装”按钮中
返回self.\u按钮\u立即\u功能（类型（self）.按钮\u安装）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/addons/base/models/ir_module.py”，第592行，在即时按钮功能中
modules.registry.registry.new（self.\u cr.dbname，update\u module=True）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/modules/registry.py”，第89行，新版本
加载模块（注册表、数据库、强制演示、状态、更新模块）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/modules/load.py”，第453行，加载模块
处理的模块+=加载标记的模块（cr、图形、，
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/modules/loading.py”，第346行，加载标记的模块
已加载，已处理=加载模块图(
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/modules/load.py”，第197行，加载模块图
注册表.设置\u模型（cr）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/modules/registry.py”，第269行，安装模式中
型号。_设置_基础（）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/models.py”，第2780行，在“设置”库中
self.\u添加\u字段（名称，field.new（））
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/models.py”，第402行，在添加字段中
field.setup_base（自身、名称）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/fields.py”，第278行，位于安装库中
自我设置属性（型号、名称）
文件“/home/ajay/PycharmProjects/odoo/odoo-14.0/odoo/fields.py”，第2282行，在属性设置中
setdefault（键“set null”）
例外情况

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上述异常是以下异常的直接原因：

您使用的是哪个python版本？您使用的是哪个python版本？