看官方的uniDloud云开发的教程，留言本做到最后一页了，不知道报啥错了

<template>
<view>
<unicloud-db where="where" v-slot:default="{data, loading, error, options}" collection="guestbook,uni-id-users" field="_id,text,state,user_id.nickname,user_id.avatar_file,user_id._id">
<view v-if="error">{{error.message}}</view>
<view v-else>
<view v-for="(item,index) in data" :key="index" class="item">
<view class="main">
<cloud-image class="pic" :src="item.user_id[0].avatar_file.url"></cloud-image>
<view>
<text class="nickname">{{item.user_id[0].nickname}}</text>
<text>{{item.text}}</text>
<button @click="changeState">{{item.state?'审核通过':'审核中'}}</button>
</view>
</view>
</view>
</view>
</unicloud-db>
<view class="submit-box">
<input class="input-box" v-model="text" />
<button @click="text?send():''" class="btn" :class="{active:text}">发送</button>
</view>
</view>
</template>

<script>
export default {
data() {
return {
text:""
}
},
computed:{
where(){
if (this.uniIDHasRole('AUDITOR') ){
return ''
}else{
return 'state == true || user_id._id == $cloudEnv_uid'
}
}
},
methods: {
async send(){
const db = uniCloud.database();
const guestbookTable = db.collection('guestbook')
let res = await guestbookTable.add({
"text":this.text,
})
if(!res.result.code){
uni.showToast({
title:'发送成功',
icon:'none'
});
this.text = ''
this.$refs.udb.refresh()
}
},
changeState(item){
this.$refs.udb.update(item._id,{state:!item.state},{complete:e=>{
console.log(e);
this.$refs.udb.refresh()
}})
}
}
}
</script>

<style lang="scss">
.main {width: 100%;
border-bottom:#f1f1f1 1px solid;
display: flex;
padding: 10px;
}

.nickname{color: #007AFF;}
.zt{color:red;}
.submit-box{
display: flex;
}
</style>

我也遇到了 =-= 现在大佬解决了么 ？指点一下

意思不是说查询条件的语法错误吗