用schema2code生成的代码中，uni-file-picker不显示图片，是怎么回事？

<script>
import { enumConverter, filterToWhere } from '../../js_sdk/validator/aisme.js';

const db = uniCloud.database()
// 表查询配置
const dbOrderBy = '' // 排序字段
const dbSearchFields = [] // 模糊搜索字段，支持模糊搜索的字段列表。联表查询格式: 主表字段名.副表字段名，例如用户表关联角色表 role.role_name
// 分页配置
const pageSize = 20
const pageCurrent = 1

const orderByMapping = {
"ascending": "asc",
"descending": "desc"
}

export default {
data() {
return {
collectionList: "aisme",
query: '',
where: '',
orderby: dbOrderBy,
orderByFieldName: "",
selectedIndexs: [],
options: {
pageSize,
pageCurrent,
filterData: {},
...enumConverter
},
imageStyles: {
width: 64,
height: 64
},
exportExcel: {
"filename": "aisme.xls",
"type": "xls",
"fields": {
"名字": "name",
"头像": "avatar",
"照片": "photos"
}
},
exportExcelData: []
}
},
onLoad() {
this._filter = {}
},
onReady() {
this.$refs.udb.loadData()
},
methods: {
onqueryload(data) {
this.exportExcelData = data
},
getWhere() {
const query = this.query.trim()
if (!query) {
return ''
}
const queryRe = new RegExp(query, 'i')
return dbSearchFields.map(name => queryRe + '.test(' + name + ')').join(' || ')
},
search() {
const newWhere = this.getWhere()
this.where = newWhere
this.$nextTick(() => {
this.loadData()
})
},
loadData(clear = true) {
this.$refs.udb.loadData({
clear
})
},
onPageChanged(e) {
this.selectedIndexs.length = 0
this.$refs.table.clearSelection()
this.$refs.udb.loadData({
current: e.current
})
},
navigateTo(url, clear) {
// clear 表示刷新列表时是否清除页码，true 表示刷新并回到列表第 1 页，默认为 true
uni.navigateTo({
url,
events: {
refreshData: () => {
this.loadData(clear)
}
}
})
},
// 多选处理
selectedItems() {
var dataList = this.$refs.udb.dataList
return this.selectedIndexs.map(i => dataList[i]._id)
},
// 批量删除
delTable() {
this.$refs.udb.remove(this.selectedItems(), {
success:(res) => {
this.$refs.table.clearSelection()
}
})
},
// 多选
selectionChange(e) {
this.selectedIndexs = e.detail.index
},
confirmDelete(id) {
this.$refs.udb.remove(id, {
success:(res) => {
this.$refs.table.clearSelection()
}
})
},
sortChange(e, name) {
this.orderByFieldName = name;
if (e.order) {
this.orderby = name + ' ' + orderByMapping[e.order]
} else {
this.orderby = ''
}
this.$refs.table.clearSelection()
this.$nextTick(() => {
this.$refs.udb.loadData()
})
},
filterChange(e, name) {
this._filter[name] = {
type: e.filterType,
value: e.filter
}
let newWhere = filterToWhere(this._filter, db.command)
if (Object.keys(newWhere).length) {
this.where = newWhere
} else {
this.where = ''
}
this.$nextTick(() => {
this.$refs.udb.loadData()
})
}
}
}
</script>

<style>
</style>

搞了很久。 是哪里出了错。