我正在执行复合查询，但一无所获

Question

我正在执行复合查询，尽管删除组合时我得到了全部数据，但是放入

时却从数据库中什么也没有

.where().where()

这是我用来执行此操作的方法：

async function myMethod (userDoc, apartmentDoc, json) {
    try {
        // this variables will be used in getting tickets' snapshot
        var tickets = [];

        // this converts date from json to unix time
        var unixTimestamp = Math.round(new Date(json.TimePreferred).getTime() / 1000);

        // we will get the whole day query by 
        // trpping timestamp from the first second until the last second of the day

        //this is start query
        var start = unixTimestamp;
        console.log('This is start query', start);

        // this is end query
        var end = unixTimestamp + 86400;
        console.log('This is end query', end);

        var ticketsSnapshot = await usersRoot.doc(userDoc.id).collection('Apartments').doc(apartmentDoc.id).collection('Tickets').where('TimePreferred', '>=', start).where('TimePreferred', '<=', end).get();
        console.log('This is the length of data we got',ticketsSnapshot.docs.length);

        // i can use forEach here because this is first level firebase (just one doc id is unknown)
        for (const ticketDoc of ticketsSnapshot.docs) {
            // Rewrite the timestamp objects
            var object = rewriteTheTimestamp(ticketDoc);
            // console.log('this is our time from database ',ticketDoc.data().TimePreferred._seconds);
            tickets.push(object);
        }
        return tickets;
    } catch (error) {
        console.log('err at Getting ticketsSnapshot 3', error);
    }
}

我希望从数据库获得的文档是（如所引用的）：

我得到的结果是：

This is start query 1554076800
This is end query 1554163200
This is the length of data we got 0