uniapp开发微信小程序，使用Camera，提示没有该组件，咋整呢

<view>
<camera device-position="back" flash="off" mode="scanCode" style="width: 300rpx; height: 300rpx;"></camera>
</view>

报错如下：
[Vue warn]: Unknown custom element: 《v-uni-camera》 - did you register the component correctly? For recursive components, make sure to provide the "name" option.

found in

---> at pages/power/powerScan.vue