feats

src/pages/home/components/Banner.jsx

     <Row gutter={24}>
       <Col span={6}>
         <Card>
-          <Statistic prefix={<UserOutlined />} title="注册用户" value={sum.user_num} />
+          <Statistic prefix={<UserOutlined />} title="注册用户" value={sum.user_num || 0} />
         </Card>
       </Col>
       <Col span={6}>
         <Card>
-          <Statistic prefix={<ShrinkOutlined />} title="待处理问题单数" value={sum.published_num} />
+          <Statistic prefix={<ShrinkOutlined />} title="待处理问题单数" value={sum.published_num || 0} />
         </Card>
       </Col>
       <Col span={6}>
         <Card>
-          <Statistic prefix={<DoubleRightOutlined />} title="处理中问题单数" value={sum.assigned_num} />
+          <Statistic prefix={<DoubleRightOutlined />} title="处理中问题单数" value={sum.assigned_num || 0} />
         </Card>
       </Col>
       <Col span={6}>
         <Card>
-          <Statistic prefix={<CarryOutOutlined />} title="已办结问题单数" value={sum.unassigned_num} />
+          <Statistic prefix={<CarryOutOutlined />} title="已办结问题单数" value={sum.end_num || 0} />
         </Card>
       </Col>
     </Row>