unicloud-db这个错误是哪里报出来的？在每次加载时出现

<template>  
    <view class="container">  
        <unicloud-db ref="udb" v-slot:default="{data, error}" :collection="customerList" loadtime="manual" >  
        <view  
            v-if="error">  
            {{error.message}}  
    </view>  
    <view v-else-if="data">  
        <uni-list>  
            <uni-list-item v-for="(item,index) in data" :key="index"  
                :title="item.name + item.mobile + item.area[0].text"></uni-list-item>  
        </uni-list>  
    </view>  
    </unicloud-db>  

    </view>  
</template>  

<script>  
    const db = uniCloud.database();  

    export default {  
        data() {  
            return {  
                customerList: []  
            }  
        },  
        methods: {  

        },  
        onLoad() {  

            const uid = uniCloud.getCurrentUserInfo().uid  

            this.customerList = [  
                db.collection("customer").where({  
                    "user_id": uid  
                }).field("realname,name,mobile,area,_id as customer_id").getTemp(),  
                db.collection("area").field("_id as area,name as text").getTemp(),  
                db.collection("chance").field("name,customer_id").getTemp()  
            ]  

            this.$nextTick(  
                () => {  
                    this.$refs.udb.loadData()  
                }  
            )  

        },  

        onPullDownRefresh() {  
            this.$refs.udb.loadData({  
                    clear: true  
                },  
                () => {  
                    uni.stopPullDownRefresh()  
                }  
            )  
        }  

    }  
</script>