我将在Odoo中使用继承将性别字段添加到res.users模型中，但是无论遇到什么内部服务器错误，都请帮帮我。预先感谢

Python代码：

from odoo import models,fields


class UsersInherit(models.Model):
    _inherit = "res.users"
    x_gender = fields.Selection(string="Gender",required=True,selection=[("male","Male"),("female","Female")])

XML代码：

<?xml version="1.0" encoding="UTF-8"?>
<odoo>
    <record id="resusersinherit" model="ir.ui.view">
        <field name="name">erfan.usersinherit</field>
        <field name="model">res.users</field>
        <field name="inherit_id" ref="base.view_users_form"/>
        <field name="arch" type="xml">
            <field name="login" position="after">
                <h3>
                    <field name="x_gender"/>
                </h3>
            </field>
        </field>
    </record>
</odoo>