I encountered an error while trying to upgrade the odoo module. Could anyone help me with how to fix it?

Traceback (most recent call last):
  File "C:\Odoo\odoo-16.0\odoo\tools\convert.py", line 698, in _tag_root
    f(rec)
  File "C:\Odoo\odoo-16.0\odoo\tools\convert.py", line 599, in _tag_record
    record = model._load_records([data], self.mode == 'update')
  File "C:\Odoo\odoo-16.0\odoo\models.py", line 4357, in _load_records
    records = self._load_records_create([data['values'] for data in to_create])
  File "C:\Odoo\odoo-16.0\odoo\models.py", line 4279, in _load_records_create
    return self.create(values)
  File "", line 2, in create
  File "C:\Odoo\odoo-16.0\odoo\api.py", line 410, in _model_create_multi
    return create(self, arg)
  File "C:\Odoo\odoo-16.0\odoo\addons\base\models\res_users.py", line 1559, in create
    users = super(UsersView, self).create(new_vals_list)
  File "", line 2, in create
  File "C:\Odoo\odoo-16.0\odoo\api.py", line 410, in _model_create_multi
    return create(self, arg)
  File "C:\Odoo\odoo-16.0\odoo\addons\base\models\res_users.py", line 1269, in create
    return super(UsersImplied, self).create(vals_list)
  File "", line 2, in create
  File "C:\Odoo\odoo-16.0\odoo\api.py", line 410, in _model_create_multi
    return create(self, arg)
  File "C:\Odoo\odoo-16.0\odoo\addons\base\models\res_users.py", line 574, in create
    users = super(Users, self).create(vals_list)
  File "", line 2, in create
  File "C:\Odoo\odoo-16.0\odoo\api.py", line 410, in _model_create_multi
    return create(self, arg)
  File "C:\Odoo\odoo-16.0\odoo\addons\base\models\ir_fields.py", line 665, in create
    recs = super().create(vals_list)
  File "", line 2, in create
  File "C:\Odoo\odoo-16.0\odoo\api.py", line 410, in _model_create_multi
    return create(self, arg)
  File "C:\Odoo\odoo-16.0\odoo\models.py", line 3936, in create
    records = self._create(data_list)
  File "C:\Odoo\odoo-16.0\odoo\models.py", line 4117, in _create
    cr.execute(
  File "C:\Odoo\odoo-16.0\odoo\sql_db.py", line 315, in execute
    res = self._obj.execute(query, params)
psycopg2.errors.UniqueViolation: duplicate key value violates unique constraint "res_users_login_key"
DETAIL:  Key (login)=(default) already exists.


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

Traceback (most recent call last):
  File "C:\Odoo\odoo-16.0\odoo\http.py", line 1579, in _serve_db
    return service_model.retrying(self._serve_ir_http, self.env)
  File "C:\Odoo\odoo-16.0\odoo\service\model.py", line 134, in retrying
    result = func()
  File "C:\Odoo\odoo-16.0\odoo\http.py", line 1608, in _serve_ir_http
    response = self.dispatcher.dispatch(rule.endpoint, args)
  File "C:\Odoo\odoo-16.0\odoo\http.py", line 1805, in dispatch
    result = self.request.registry['ir.http']._dispatch(endpoint)
  File "c:\odoo\odoo-16.0\addons\website\models\ir_http.py", line 235, in _dispatch
    response = super()._dispatch(endpoint)
  File "C:\Odoo\odoo-16.0\odoo\addons\base\models\ir_http.py", line 144, in _dispatch
    result = endpoint(**request.params)
  File "C:\Odoo\odoo-16.0\odoo\http.py", line 698, in route_wrapper
    result = endpoint(self, *args, **params_ok)
  File "c:\odoo\odoo-16.0\addons\web\controllers\dataset.py", line 46, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "c:\odoo\odoo-16.0\addons\web\controllers\dataset.py", line 33, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "C:\Odoo\odoo-16.0\odoo\api.py", line 461, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "C:\Odoo\odoo-16.0\odoo\api.py", line 448, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "", line 2, in button_immediate_upgrade
  File "C:\Odoo\odoo-16.0\odoo\addons\base\models\ir_module.py", line 76, in check_and_log
    return method(self, *args, **kwargs)
  File "C:\Odoo\odoo-16.0\odoo\addons\base\models\ir_module.py", line 678, in button_immediate_upgrade
    return self._button_immediate_function(type(self).button_upgrade)
  File "C:\Odoo\odoo-16.0\odoo\addons\base\models\ir_module.py", line 615, in _button_immediate_function
    registry = modules.registry.Registry.new(self._cr.dbname, update_module=True)
  File "", line 2, in new
  File "C:\Odoo\odoo-16.0\odoo\tools\func.py", line 87, in locked
    return func(inst, *args, **kwargs)
  File "C:\Odoo\odoo-16.0\odoo\modules\registry.py", line 91, in new
    odoo.modules.load_modules(registry, force_demo, status, update_module)
  File "C:\Odoo\odoo-16.0\odoo\modules\loading.py", line 423, in load_modules
    loaded_modules, processed_modules = load_module_graph(
  File "C:\Odoo\odoo-16.0\odoo\modules\loading.py", line 230, in load_module_graph
    load_data(cr, idref, mode, kind='data', package=package)
  File "C:\Odoo\odoo-16.0\odoo\modules\loading.py", line 71, in load_data
    tools.convert_file(cr, package.name, filename, idref, mode, noupdate, kind)
  File "C:\Odoo\odoo-16.0\odoo\tools\convert.py", line 763, in convert_file
    convert_xml_import(cr, module, fp, idref, mode, noupdate)
  File "C:\Odoo\odoo-16.0\odoo\tools\convert.py", line 829, in convert_xml_import
    obj.parse(doc.getroot())
  File "C:\Odoo\odoo-16.0\odoo\tools\convert.py", line 749, in parse
    self._tag_root(de)
  File "C:\Odoo\odoo-16.0\odoo\tools\convert.py", line 698, in _tag_root
    f(rec)
  File "C:\Odoo\odoo-16.0\odoo\tools\convert.py", line 711, in _tag_root
    raise ParseError('while parsing %s:%s, somewhere inside\n%s' % (
odoo.tools.convert.ParseError: while parsing file:/c:/odoo/odoo-16.0/odoo/addons/base/data/res_users_data.xml:27, somewhere inside

            Default User Template
            default
            
        

The above server error caused the following client error:
RPC_ERROR: Odoo Server Error
    at makeErrorFromResponse (http://elearning.zod.vn:8069/web/assets/debug/web.assets_backend.js:10149:19) (/web/static/src/core/network/rpc_service.js:34)
    at XMLHttpRequest. (http://elearning.zod.vn:8069/web/assets/debug/web.assets_backend.js:10202:27) (/web/static/src/core/network/rpc_service.js:87)