struct Game: Codable {
    
    let id: String
    
    var table = Table()
    
    var players = [Player]()
    
    var player1ID = ""
    var player2ID = ""
    
    var currentPlayerSetCountShouldAnimate = false
    var opponentSetCountShouldAnimate = false
    
    init(currentPlayer: Player) {
        id = UUID().uuidString
        players.append(currentPlayer)
        players[0].playerNumber = 0
        player1ID = currentPlayer.id
    }
}

struct Player: Codable, Equatable {
    var id = UUID().uuidString
    
    var playerNumber = 0
    
    var selectedCards: [Card]
    var collectedSets: [Card]
    var selectedCardsIndexes: [Int]
    
}

我将Game对象存储在Firestore数据库中，而不是在向selectedCards数组添加Card对象时更新整个游戏，我只想更新当前玩家的selectedCards数组。

func updatePlayerSelectedCards(player: Player) {
    do {
        let selectedCards = try JSONEncoder().encode(player.selectedCards)
        let gameRef = Firestore.firestore().collection("Game").document(game.id)
        let playerRef = gameRef.collection("players")

        playerRef.document("\(player.playerNumber)").updateData(["selectedCards": selectedCards]) { (error) in
            if let error = error {
                print("Error updating selectedCards field: \(error)")
            } else {
                print("Successfully updated selectedCards field")
            }
        }
    } catch {
        print(error.localizedDescription)
    }
}

我已经编写了很多关于这个函数的变体，但是当我试图访问players数组的playerNumber索引时，它给了我这个错误：
[FirebaseFirestore][I-FST 000001]写入数据流（7 f9 b27810 c 08）数据流错误：'未找到：没有要更新的文档：项目/设置游戏bc/数据库/（默认）/文档/游戏/FC 600 D8 C-85 DC-4465-8648- 31 FFA 90086 EB/玩家/0'
在所附的图片中，很明显，索引（在本例中为0）存在于播放器数组中。它不是一个文档吗？我需要使用FieldValue.arrayUnion吗？这是我的第一个“大型”项目，我觉得完成这个项目应该不难，所以我想我可能错过了一些简单的东西。任何帮助和澄清都将非常感谢。