我正在使用此函数以确保正确打开和关闭框，但仍然出现HiveError: Box has already been closed.错误

static Future<Box<dynamic>> openIt() async {
    var connectionBox = await Hive.openBox(hiveBox);
    if (Hive.isBoxOpen(hiveBox) == false) {
      await Hive.openBox(hiveBox);
     
    } else {
      await connectionBox.close();
      connectionBox = await Hive.openBox(hiveBox);
      
    }

    return connectionBox;
  }

我如何解决这个问题。