v-for循环两段相同的代码，一个项目正常运行，一个项目报错Unresolved reference：

我创建了两个项目，旧的项目中真机运行就会报错Unresolved reference: xxx
旧项目web端可以正常运行，新项目中也可以正常运行
这是uvue：

    <template>  
    <view>  
        <view v-for="(item,index) in objectArray" :key="item.id">  
            {{index+":"+item.name}}  
        </view>  
        </view>  
    </template>  
    <script>  
    export default {  
        data () {  
            return {  
                objectArray: [{  
                    id: 0,  
                    name: '李强',  
                    age:"16",  
                    long:"160"  
                },{  
                    id: 1,  
                    name:'张三',  
                    age:"17",  
                    long:"170"  
                },{  
                    id:2,  
                    name:"jack",  
                    age:"18",  
                    long:"180"  
                }],  

            }  
        }  
        }  
</script>  

<style>  

</style>

旧项目真机运行报错

error: Unresolved reference: id‌  
23:44:11.569 at pages/index/home/home.uvue:3:55  
23:44:11.569 1  |   <template>  
23:44:11.569 2  |   <view>  
23:44:11.569 3  |    <view v-for="(item,index) in objectArray" :key="item.id">  
23:44:11.569    |                                                         ^  
23:44:11.569 4  |     {{index+":"+item.name}}  
23:44:11.569 5  |    </view>  
23:44:11.570 ‌error: Unresolved reference: name‌  
23:44:11.570 at pages/index/home/home.uvue:4:20  
23:44:11.570 2  |   <view>  
23:44:11.570 3  |    <view v-for="(item,index) in objectArray" :key="item.id">  
23:44:11.570 4  |     {{index+":"+item.name}}  
23:44:11.570    |                      ^  
23:44:11.570 5  |    </view>  
23:44:11.570 6  |    </view>