在搜索了一些引用之后。当在数据类中添加字段值时，就足以在firestore文档中创建一个timeStamp了。但在我的情况下，我也是这样做的
资料类别

import com.google.firebase.firestore.ServerTimestamp
import java.sql.Date

data class Banner(
 var banner_id:String? = null,
 var banner_title:String? = null,
 var banner_offer:String? = null,
 var banner_image:String? = null,
 var banner_priority:String? = null,
 var banner_tags:List<String>? = null,
 var banner_product_tags:List<String>? = null,
 @ServerTimestamp
 var banner_timeStamp: Date? = null
)

文档本身未写入或上传到firestore数据库的集合中，也未显示任何错误或异常。删除@ServerTimeStamp字段时，文档以应有的方式上传
实施

override suspend fun addBannersToFirestore(banner: Banner): AddBannerResponse {
    return try {
        Log.i(TAG,"Banner Upload Started")
        val bannerId = bannerRef.document().id
        val bannerData = Banner(
            banner_id = bannerId,
            banner_title = banner.banner_title,
            banner_offer = banner.banner_offer,
            banner_image = banner.banner_image,
            banner_priority = banner.banner_priority,
            banner_tags = banner.banner_tags,
            banner_product_tags = banner.banner_product_tags
        )
        bannerRef.document(bannerId).set(bannerData).await()
        Success(true)
    } catch (e: Exception) {
        Failure(e)
    }
}

谁能帮我找出错误谢谢