引入了 "van-icon": "/vant-weapp/icon","van-button": "/vant-weapp/button",然而在使用<van-button icon="star-o" type="primary">按钮</van-button>时左侧的图标没出来
<van-button type="primary">
<van-icon name="star-o" />
按钮
</van-button>